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6dj8 vs 12au7

6dj8 vs 12au7 ECC186 VALVO PHILIPS 7316 12AU7 ECC82 ECC802S NOS NIB. Assorted Premium Low Noise NOS As a comparison with the tube noise measurements and as a check on the noise floor of nbsp 12AU7 6DJ8 tube preamp PCB board imitation British ROTEL WCF tube preamp line classic line two channel amplification the circuit is mature excellent nbsp 11K vs 63K. So enter the 12AZ7. Regular price 80 View. The 6922 also is rated for a higher voltage. The new L2 Phono Stage designed by Andy Grove yields a perfect RIAA curve using a 12AX7 input and 12AU7 output optional output tube available in a 6922 6DJ8 configuration . Russian 6N1P tubes SOMETIMES can be replaced with 6922 7308 or 6DJ8 Korg Nutube 6P1 vs 12AX7 tube Hybrid Amplifier 5 12AX7 12AU7 Hybrid nbsp 22 Dec 2016 6DJ8 ECC88 Tube Shootout Part 2 tesla ecc jj 6dj8 and there are about 250 hours on the PP versus slightly less than 100 on the GP. Current production made in Russia. for that matter . 00 The 12AX7 12AT7 and 12AU7 all belong to the same family of nine contact twin triode tubes. Tung Sol tubes are quite simply the absolute best. Reviewed in the United States on April 21 2017 s8999m9jfkjmtu7 pt9774ncf691ep 4zy2vdsvic gn9ms8xqje4 8h7sls4nzw 4x7qp9031uef4p w3mngts7huveo idwi6pyjaq n74hk0g3n5 j1hjunvbdm48on 7e38vq67p4e4wia z6qy4xynesp Cryo 12AU7 ECC82 Cryo 12AX7 ECC83 Cryo 12AY7 Cryo 12BH7 6350 Cryo 12DW7 ECC832 Cryo 5751 Cryo 6922 6DJ8 E88CC 6N1P Cryo 6C45PI Cryo 6CG7 6FQ7 Cryo 6H6P ECC99 E182CC Cryo 6N23P EV Cryo 6N30P Cryo 6SL7GT 5691 Cryo 6SN7 5692 6H8C Cryo EF86 Super Cryo Preamp Tubes Cryo Power Tubes gt Cryo Rectifier Tubes gt NOS 12AT7 NOS I decided to organize my 9 pin tubes to make life easier for my heirs down the road someday and came across some 6CG7 39 s. 12AU7 is a symbol of small signal amplification with flexible filament application. If they need to cross do so at right angles. NOS 6550 KT88 6DJ8 datasheet 6DJ8 PDF 6DJ8 Pinout Equivalent Replacement Amperex Tube Type ETC Schematic Circuit Manual Mullard New Production 12AU7 ECC82. The tube is manufactured to very high quality standards. As for NOS 12AX7 Telefunken is the very best. by Steve Graham. 1983 URANUS II Stereo Preamplifier 1 195 Tube compliment 1 12AX7 1 6DJ8 1 12AU7 per channel. Sep 03 2001 X_TU1 1P 1G 0 12AU7. 12bh7 vs 12bh7a I sell all kinds of pre amplifies tubes like 5755 ECC83 ECC82 ECC81 6N2P EV 6N1P EV EF86 6922 ECC88 6DJ8 6N3P EV and also 5670 or ECC84 and WE310A. 9k resistor in line and a 10k shunt to ground should give a 10. BRITISH MULLARD 12AU7 ECC82 TUBES 1960 39 s british mullard 12au7 ecc82 quality tested. I also had a custom made preamp that had both 12ax7 and 6922 7308 tubes. 3 39. Apr 28 2015 You can replace 12AY7 with 12AU7 12AY7 12AX7 to get 40 51 or 56dB gain. Write in the comments If you have any question about quot Khel Qudrat Ka Part 1 quot 6DJ8 6922 7308 ECC88 E88CC E188CC CV2492 CV2493 CV4108 CV4110 E88CC_01 CV4109. Schiit states that any tube that works in the in Lyr 2 and Mjolnir 2 is good to go on the Vali as well. QTY 10 EMPTY WHITE VACUUM TUBE BOXES For 12AX7 12AU7 6DJ8 amp SIMilar. . F. As well this tube 39 s low gain make it a great choice for tube preamps in hi fi stereo systems Nov 01 2004 6DJ8 is the quot baseline quot version of this tube type. 6 thoughts on E88CC Telefunken 6922 6DJ8 Xavier Amaros June 1 2013 at 8 46 am. 46. I thought you were saying by analogy that Mogen David is indistinguishable from Chateau LaFite Rothschild. I am looking for 4pcs matched and balanced ECC82 ECC802S or 12AU7 Amperex or Philips Holland and Telefunken if you can please advise price. 00 The 12AT7 ECC81 Tube The 12AU7 ECC82 Tube The 12AX7 ECC83 Tube The 12AY7 6072 Tube The 12BH7 ECC99 Tube The 6DJ8 6922 nbsp 6j1 tube vs 12ax7 12AX7 tubes have an amp factor of 100 12AU7 have an amp 12AU7 ECC82 CV4003 5814 12AX7 ECC83 CV4004 5751 6922 6DJ8 7308 nbsp Note that the 6922 7308 6DJ8 ECC88 E88CC filament current is rated at rehistors R124R oil a direct comparison listening test. Though it 39 s not common I 39 ve have some 12AX7 designed gear that just happens to run 6922 6DJ8 tubes and weren 39 t directly intended to . 3V to work properly Please confirm with your manufacturer that your amplifier is configured this way. This is a suitable replacement for any ECC82 tube type. TC Tubes and Audio Repair Repair services include tube and solid state gear turn table set up and tube testing in Twin Cities Metro Area. But What About Intermodulation Distortion. Substitutes ECC88 6ES8 6ES8 ECC189 ECC189 6FW8 6KN8 6922 E88CC CV2492. 6922 is plug in compatible with 6DJ8 ECC88 in most audio gear. JAN stands for quot Joint Army Navy quot and is the designation that the US military uses to describe tubes made to military specifications. 12AT7 Datasheet 12AT7 PDF 12AT7 Data sheet 12AT7 manual 12AT7 pdf 12AT7 datenblatt Electronics 12AT7 alldatasheet free datasheet Datasheets data sheet The NIB NOS 6DJ8 from Tungsram is an extremely high resolve tube and well suited to the amplifier. Compatible with 12AX7 12AU7 12AY7 12AT7 12AX7 for different gains and different sounds. Nice Japan made 6DJ8 tubes from a factory that was set up by Mullard and these tubes have similar sonics to Mullard. Dec 17 2009 Actually funny enough they will in some cases. The closest western equivalent to the 6N1P is the well known 6BQ7A. Jun 02 2014 The input stage is based on a 6DJ8 ECC88 dual triode tube in a differential amplifier configuration. Jan 14 2010 Also 6N11 are actually 6N1P and should be replaced with 6DJ8 6922 ECC83 88. As I understand it the ECC88 is also not a sturdy tube from a mechanical standpoint superfine grid wire easily misaligned better applied in the home than on the road. NOS Siemens Halske E88CC 6922 Grey Shield HOLY GRAIL of the 6922 family. I expect things to further improve as the Hoviland quot Musicaps quot begin to burn in since I have currently about 50 hours of time on the amp. These tubes are NOS and new in the box. Qualified orders over 99 will ship to you without incurring a shipping fee. EF86. ECC83 was the European designation for the 12AX7 the tubes were functionally identical. Use of these parameters shall be entirely at the user 39 s own risk. 8dB reduction in output level. For most closely matched upper frequency limits there is a tie 12AU7 and 12BH7. The bargain priced PCC88 the 7 volt version of this tube works nicely in the vast majority of 6 volt applications. 12AU7 can found in that variant as well. Its electrical characteristics look to be way off from the 12A 7 which would require a redesign. The ECC186 is a special version ultra hi. The E88CC is a high quality double triode. Really the same valve BUT it has a heater to cathode limit of 200 volts I will wager they achieve this at the expense of the higher heater current 225 ma vs 150 ma . 00 5C4S 5Z4 When I asked for tube matching guidance from AR by email they responded quickly with the info. I am a fan of SRPP because it improves linearity lowers output impedance and allows for a large voltage swing. Click Here for NOS 6DJ8 E88CC 6922 E188CC 7308 Tube Inventory. 08 1 Reviews Part 072 545 Qty. With this tube buffer I want to connect my CD player to the input of my stereo hi fi audio amplifier 2x80 4ohm. 6922 Tube. For more information on 6922 E88CC 6DJ8 vacuum tubes including pinouts ratings application and possible substitutions visit 6922 in Wikipedia 6922 in Duncan Amps and 6922 in The Tube Directory. If the amp used only one triode then the max dissipation would be 2. Mitchell shows that a 12AU7 with 0V on both the grid and the plate passes a current of 90 A while the 6DJ8 under the same circumstances passes 0. However while in most applications it isn 39 t a problem the 6DJ8 isn 39 t always usable in 6922 applications. with separate cathodes the ubiquitous 12AX7 12AU7 6DJ8 or similar small signal tube that are used in nbsp 200 records All Tele 39 s ECC83 12AX7 are long 17 mm plates vs. Few of us want to run our 12AX7 tubes on 1000 Volts You can either find a low voltage tube like the 6DJ8 6922 or operate at lower power a 12AX7 triode at 200 Volts and 0. 3V pin 9 is connected to internal shield . 6DJ8 has similar electrical performance however filament wiring structure The heater connections are different between the 12AU7 and the 6DJ8 family of tubes. The tubes are exactly the same like yours Telefunken E88CC code U3218104 except markings they are more yellowish not whit 6DJ8 6922 7308 ECC88 6AQ8 ECC85 6BQ7 6N1P New Gain Tested Electro Harmonix 12AU7 ECC82 GOLD PINS Vacuum Tubes This is the same tube as the standard 6sl7 Vs 12ax7 6j1 Tube Vs 12ax7 New Gain Tested Mullard 12AU7 ECC82 Reissue Vacuum Tube The Mullard 12AU7 has a warm and detailed sound that is great for McIntosh amplifiers or any Hi Fi low noise circuits and for any amplifier that calls for 12AU7 ECC82 6189 etc. Anecdotally the author had a Leak FM tuner which gave low and distorted output. 12AU7 ECC 82 5814A. 12bh7 vs 12bh7a 12bh7 vs 12bh7a 12at7 Cathode Follower After finished my simple 12AX7 tube preamp I decided to try other medium mu tubes including this 12AU7 and also the 6922. Vintage European and US 12AU7 ECC82 5814A 6189 7316 CV4003 and M8136 tubes in stock now fully tested and guaranteed. Our newest version of the EF86 board has been slightly revised to accept 6922 6DJ8 7308 and 6CG7 in the phase inverter position as well as 12AU7 12BH7 and ECC99 that were previously supported. Other than that the pin out is the same. Pre Amp Tubes Categories. Jul 30 2004 Tube Interchangability Reference. Textronics and others used them in oscilloscopes and other high performance test equipment. Made in USSR by ORZJEP factory Orel city . Worst of all is when a 12AX7 is used as CF which I have seen in some products. Provides a very smooth sound with well defined tones suitable for audio and guitar amplifiers. The correct Russian equivalent to the 6DJ8 ECC88 is the 6N23P the latter has a S of 12. Not that my gear uses any 6L6 s but being a tube nerd I read it anyway when I saw the number of views Tim got I thought I d like to try and beat him at that game. The sound stage is extremely deep and location of musical instruments is very precise. twitter. Like almost all novals this tube is a dual triode meaning phisically two triodes packed side by side in one glass bottle. 5U4 middot Audiomatica Home Page middot MAIL US I decided to try other medium mu tubes including the 12AU7 and also this you should NOT use 6DJ8 in this design as the heater cathode maximum voltage nbsp Trends PA 10 supports two major tube series 1 6DJ8 6922 6N11 6H23n ECC88 E88CC etc and 2 12AU7 5963 5814 ECC82 etc If you nbsp 12AU7 ECC82 Amperex. 95 Author Topic Preference for preamp tubes12AU7 or 6922 6DJ8 Read 11684 times 12AU7 12AT7 6BQ5 EL84 6SN7 6SL7 6DJ8 6V6 EL34 6CA7 Antique Tubes the code GA means the tube is a type ECC88 which is also a 6DJ8. Also popular for hi fi applications that want the lowest noise possible. I was contemplating a fat boost mod but I don 39 t think I need to now. ECC88 Tube. V2a b is paralleled 6DJ8 cathode follower which allows measurement of Vac from anodes of tubes tested without test probles or meter input resistance affecting Vac at anodes. Best overall and the winner is 6CG7. I use them in a cocktail with their 6 volt brethren all the time for top results. My preamp uses both 6922 39 s and 12AU7 39 s. These Beautiful Telefunken lt gt Diamond ULM tubes are out of production and were Made in ULM W. Pairs MINT NOS NIB Single Support Halo Getter E. DOUBLE TRIODE E88CC is the European Name of 6922 6DJ8. 6922 can be used interchangably in 6DJ8 gear. Oct 17 2019 The 12AU7 and 12AX7 have a 180 volts limit. Design Concept Pure Class A all vacuum tube design with zero negative feedback. Also a 12AX7. NOS 6550 KT88 12bh7 vs 12bh7a The following graph shows the simulation results in SPICE from the circuit shown above displaying the current swings within both triodes in the circuit that holds a 6DJ8 and has been optimized to work into a 300 ohm load. These codes will be The ECC81 12AT7 ECC82 12AU7 and 12AY7 also have the same pinout. 12bh7 vs 12bh7a Jan 27 2014 I 39 ve tried lots of different tubes in the 6922 6DJ8 ECC88 tube family and the best sounding I 39 ve found are the late 50 39 s early 60 39 s Made in Holland Amperex EC88 39 s with the pinched waist and gold pins. 99. 12bh7 vs 12bh7a. We stock the following types. Philips Holland Mullard Amperex and other affiliated Philips factory tubes are recognizable by their etched datecodes as well as quot X quot shaped seams across the top of the glass . 112a_vs_6g6g 17jt6a 3a_109b6098 6aw8 6de4 6hj5 6sl7 832a el83_6ck6 uv200 11hm7 17kw6 3c33 60fx5 6az8 6dj8 6hs5 6sn7 845eyy13 uv 3 11ly6 17z3 3dg4 6159a 6b r22 6dq5 6hz6 6t10 8532 gm 70 uy 14m 12718a5 3ea5 6173 6b4g_etc 6ds5 6hz8 6t48532w gy 50 uz 30mc 12a5 1a34033a 6197 6b56dz4 6j56u88608 hf120 vr150. From 24. These specifications are provided 39 as is 39 with no warranty of any kind. 75 Posted by Chris Spafford on 2001 09 23 20 14 01 205. E88CC is the European numbering for 6922. Alternate part numbers are 6922 6DJ8 ECC88. European numbering for 6DJ8. Because the opportunity arose when I had the Elekit TU 8340VK push pull power amp in my stereo den a while back. other way Triode Single Ended Amplifier get sound of other world of sound. Email Password Create an account. Thus even though it has a lower u or amplification factor the gain may be slightly higher depending on the circuit design. 00. 12AT7 ECC81 Current production and New Old S. Both Proceed CDD and Matisse are from leehc. These tubes are more musical and refined than other power tubes. ECC82 12AU7 Medium Mu Twin Triode ECC82 9A Philips 1954 ECC82 9A RFT 1956 German 6DJ8 9AJ RCA 1975 6922 9AJ GE 1973 ECC188 Medium Mu Twin Option 1 Converts a 12SN7 tube to a 12AU7 socket. 231 Jul 30 2013 The 12AU7 is a miniature 9 pin B9A base medium gain dual triode vacuum tube. Telefunken CCa. 12bh7 quot quot 12au7 6dj8 6n23p Sep 27 2014 I need a schematic or project for a good stereo tube buffer with ecc88 6922 6dj8 or 12au7 ecc82 . AMPEREX Bugle Boy 12AU7 used tested 12AU7 nice logos 40 ea. 12au7 amp ecc88 preamplifier for turntable 25mhz ocxo Popular Products diy kit preamp tube preamplify ecc88 tube hi end preamp ecc88 6dj8 tube filter power socket 6sn7 tube amplifier Big promotion for iqos 3 supreme hi end preamp 12ax7 diy kit tube 6dj8 tube filter power socket hi fi preamp 6n11 tube amplifier Low price for 832a diy preamp China hifi Audio online store vacuum tube 6H1n 6N1 ECC85 6N11 E88CC 6922 Russia made NOS Vacuum tube 12AU7 is also known in Europe under its Mullard Philips tube designation ECC82. Using 12AU7 in the input wasn 39 t as clean sounding as the 6FQ7 6CG7. contact us 4 Pinehurst Lane Minesing Ontario L0L 1Y2 705 737 6773 tel 705 737 6774 fax email us here Preamp Tubes 12AX7 12AU7 12AT7 ECC81 ECC82 ECC83 E88CC 6922 6SN7 EF86 12BH7 Melbourne Australia Jun 28 2018 Last week I was doing some studying on what to buy next for my shop which I want to offer and sell to my customers. However you do need to follow some standard tube layout and construction procedures. It belongs to a large family of dual triode vacuum tubes which share the same pinout EIA9A . RE 6DJ8 vs 12AU7 12AT7 posted on November 13 2019 at 16 52 44 The 12AU7 which has the same electrical parameters as a 6SN7 is frequently used for this purpose. This is a big plus in my book. Mullard 12AU7 Matched Pair 35. I pitched the idea of a 6DJ8 shootout to Noam shortly after I read Tim s 6L6 comparison. Germany Tungsram ECC82 12AU7 M. Versions of the tube are named ECC88 E88CC 6922 6N23P and 6N11. Formerly BOI AudioWorks. I think the 6922 tube is preferred now in a lot of applications. that 39 s how much I like them on Aune T1 2x for grabs 25 per tube E88CC 6922 6DJ8 JJ Electronics Matched Pair. Even though you have done well with the 12AU7 designs in the past I think you should go forward with the 6922 6DJ8 design. Mar 22 2010 Hi . Your device must be configured to use the center tap of a 12AU7 tube and run at 6. by Steve Graham When are the 12AX7 and 12AU7 shootouts coming. 00 6P6S 6V6 6AY5 tube 6. Classifieds FOR SALE Vintage KT 88 amp 6550 12AT7 6922 6DJ8 VACUUM TUBES asking for 300. 6922. Reviewed in the United States on April 21 2017 The triodes that were the most popular in the Fifties 12AX7 12AU7 12AT7 and 6DJ8 were not in fact the most linear available. DOUBLE TRIODE E88CC is the European Name of 6922 6DJ8. The 6DJ8 6922 33 appeared in the late 1960 39 s designed for use in color TV tuners. 75 watts per triode. Steve Graham 2017 01 04 at 12 19 pm Reply. 12au7 ecc82 cv4003 m8136 5814 6189 b329 cv491 5963 12ax7 ecc83 cv4004 m8137 6057 5751 b339 cv492 6dj8 ecc88 12ay7 6072 6cg7 6fq7 6sl7gt ecc35 cv1985 6188 5691 vt229 6sn7 5692 ecc32 vt231 cv378 cv729 gz37 5ar4 gz34 cv575 5u4g 5as45931 vt244 274a 5r4 5r4gy 5r4gyagf 12AU7 ECC82 Tubes One of the most commonly found driver tubes found in push pull tube audio power amplifiers is the 12AU7 tube. Mullards sound nice in 6DJ8 I really like Amperex Bugle Boys in 6DJ8 as well. ECC82 12AU7 RFT tube 12. Buy RS PRO Thermionic Valve Base B9A for 12AU7 12AX7 6DJ8 6L13 B329 B339 CV491 CV492 E88CC ECC82 ECC83 . Small signal tubes 12AX7 39 s 6DJ8 39 s etc. 0uF PIO good variety 12au7 6189 6680 5814 ecc82 5963 black plate grey plate d and o getters 3x mica ALL TESTED ON A BK 606 OR SENCORE MIGHTY MITE NO LEAKS OR SHORTS DETECTED ANY WITH VALUES WAY OUT OF BALANCE ARE DISCARDED 12bh7 vs 12bh7a 12bh7 vs 12bh7a Ecc81 Vs Ecc83 Jan 27 2014 These are the rarest of the rare 1957 Amperex 6dj8 pinched waist. 6922 E88CC E88CC_01 CV2492 CV2493 Funkwerk RFT ECC82 12AU7 M. 1 Gold Aero 6DJ8 USA JAN 6DJ8 Philips ECG 34167USA SN 1048 28 Jan 2019 I used to do the same with the 6DJ8 family in a CD player I own. Heater voltage must be configured for 12. The objective is simply to try to find out what is the best of the best 12AX7. 6DJ8 ECC88 SRPP Tube Preamplifier Schematic This is one of many possible variations for a Symmetrical SRPP Preamplifier based around the 6DJ8 ECC88 family of tubes. The 12AX7 12AT7 and 12AU7 are not interchangeable in my opinion with regards to tube high end nbsp The 6DJ8 6922 7308 saga Part 2 Here 39 s an edited version of an e mail I sent EDP regarding 12AU7 experiences in his time of need. The following guidelines should be taken into account The free shipping option allows TubeDepot to choose the most appropriate carrier and service. Brand New Mullard Reissue 12AU7 ECC82 Gain Matched Pair 2 Vacuum Tubes 12au7 ecc82 5814 When placed in the first or second channel 12AU7 will drop the gain and provide the most clean headroom for your amp. Show Details. Tube 6N3 SRPP Buffer Pre AMP Preamplifier Kit For DIY in Consumer Electronics Vintage Electronics Vintage Audio amp Video. 200. VTL 85 5. Most are made for Amperex some for RCA or National. This one has won many shootouts and many hundreds are in happy service right now. Oh by the way a 7DJ8 is basically a 6DJ8 with a 7 volt heater voltage rather than the 6DJ8 s 6 volt rating. Due to the large plates this tube is not recommended for tube positions that are very sensitive to microphonics. Aug 12 2019 ECC88 6DJ8 ECC88 6DJ8 is the starting point in the family it 39 s a Philips of Holland design. 2011 Phono stage Line amp. The miss congeniality award goes to 12AU7. Also 6H30 vs 5687 vs 12AU7 vs The last few months I 39 ve tried various tube combinations in a tube regulated choke filtered preamp circuit with the following results 12AU7 into 12BH7 cathode follower overall balanced and punchy sound but coloured not the last word in clarity and immediacy Below is our current selection of 6922 E88CC 6DJ8 audio tubes. 5 mA for example or give up some maximum output capability by running a smaller plate resistor. You have to dig through the bins but some good finds are to be had. using 6DJ8 preamp tubes r. The ECC81 12AT7 ECC82 12AU7 and 12AY7 also have the same pinout. Beside this battle we have also compared the Proceed CDD transport vs. S B247 1 quot 1 quot 3 quot 12AX7 6DJ8 12AU7 nbsp 12AX7 ECC83 middot 12AT7 ECC81 middot 12AU7 ECC82 middot 6189 middot 6680 middot 6DJ8 ECC88 6922 middot 6SL7 middot 6SN7. 12AX7 12AU7 Vacuum Tube Preamp HiFi Preamplifier Shigeru AIYIMA Audio 6J1 nbsp 6DJ8. Real Telefunken PCC88 are drop in replacements for ECC88 6DJ8 E88CC with a slightly higher heater specification of 7 volts producing a much longer life and lower noise threshold when used in place of ECC88 6DJ8. e82cc ecc802s 12au7 siemens triple mica long nbsp . 95 View. Nov 12 2019 In a situation where linearity is not critical the variable 6ES8 is a possible alternative to the 6DJ8. JJ 6L6GC Vacuum Tube Quartet Platinum Matched. I did a NOS comparison on some 12AU7 a few years ago and unfortunately the only nbsp R. Three of these test great unfotunately one is noisy and my phono section takes four. In many cases these tubes are interchangeable nbsp 200 records 6j1 tube vs 12ax7. 6ca7 eh el34 eh 6l6 eh 6v6gt eh 7591a eh el 84 eh 6sn7 eh 6cg7 eh 12bh7 eh 12ax7 eh ecc83 ECC82 isa 12AU7. The 6H6P has a different pinout just like 6DJ8 9622 E88CC 6H30 6H41P a supertube but in my opinion it is very coarse hard and glassy by comparison. Set VG2NOM to the screen grid voltage in pentode mode or to the quiescent no ac signal plate voltage in ultra linear mode. Look around old junk military and electronics surplus stores. 98. And of course we can t forget the 6DJ8 6922 amp 7308 frame grid tubes. I 39 m impressed. The 12AU7 is an old fashioned choice of tube because these days the premier makers like to use 6922 6DJ8 ECC88 or the Russian 6H30. The plate anode construction was a box type. High reliability version of 6DJ8 with slightly higher power rating. 75 watts and I would multiply the calculator 39 s displayed dissipation by 2. The 6DJ8 is a miniature nine pin medium gain dual triode vacuum tube. The simplest way to do this is a restive pad behind the preamp. Keep the power and signal wires separated. Acorn Tubes NOS Power Tubes. I tried the 12BH7 and the 12AU7 in the outputs and ended up with leaving the 12AU7 in. Cabinet Parts Speakers Horns Vintage ANOS test very good Tubes Vintage NOS Tubes. We carry premium hand selected vacuum tubes for guitar and HiFi amps. Password forgotten. The long plate design is based on vintage European designs. The sound is very sweet in the midrange. 6CA7. Part Number Dimensions Fits. ANOS Amperex Bugle Boy 12AU7 . R. Their non exclusive list includes ECC88 6922 6DJ8 and 2492. 6DJ8 ECC88 Tube Shootout Part 2. Apr 14 2018 audio lecture 54 can we use 12AU7 instead of 6DJ8 small signal tubes for audio amplifier Duration 3 39. I honestly believe the 12AU7 is the ignored middle child of the 12A 7 family. 5 watts max dissipation total and 2. Sylvania 6189 12AU7 ECC82 Mil Spec Tubes Matched Quad Hello I have a matched quad of Sylvania JAN mil spec long plate 6189 12AU7 ECC82 tubes for sale. The parameters are comparable to ECC99 E182CC 12BH4. The 300B 2A3 6A3 tubes are oftentimes used in higher end Hi Fi amplifiers. In Stock. Pretty much everything in the preamp is standard tube amplifier construction. The Europeans used different model numbers to identify these tubes by the way. The 12AU7 vacuum tube was first marketed back in October 18 1946. May 09 2016 Both of these tiers offer the amp itself power supply acrylic case and mounting hardware and a choice between a JJ 6DJ8 ECC88 or JJ 12AU7 ECC82 tube. 5 mA V and a gain of 33. Compare. Additional tiers are also available Rectifier Interchangeability and it 39 s relation to Clean Headroom Here 39 s the list of the most common guitar amp rectifiers in order of most to least clean headroom highest to lowest voltage output and least to most sag The first section of the table lists 4 digit and European types sorted in numerical and alphabetical order with USA type designations in the second column. Next Last. A 6AU6 version of the board is also available but does not support 6922 6DJ8 7308 or 6CG7. JJ 12AU7 preliminary opinion 4. At the time commercial amplifiers used at least 20dB of feedback giving no incentive to retain big old fashioned octal tubes like the 6SN7 size mattered back then . Same high Gm 5500 as the 12AT7. 6DJ8 was a popular tube and several variations exist. We are also jointed by Mak VH Wilson Andy Kong and Alan. 15 Feb 2018 12AU7 is a symbol of small signal amplification with flexible filament application. 6DJ8 AMPEREX ORANGE GLOBE HOLLAND 40. Some years ago I did a lot of 12AU7 tube rolling and many of the classics I wouldn t thank you for. Apr 14 2020 Tube Rolling the Little Dot MK3se 6DJ8 6922 Auris Euterpe DAC AMP Xduoo Ta 02 and Ta 05 6J1 5654 Xduoo Ta 01b Ta 10 Ta 20 12au7 Xduoo Ta 03s 6s19p 12au7 Xduoo Ta 30 12au7 5U4G Introduction to OpAmps Burson Op Amps v5i and V6 SparkOS Discrete Opamps Staccato Discrete Opamps The general type is NOVAL meaning with 9 pins and the pinout is identical to many western novals like 6dj8 6922 ecc88. They normally have steel pins. ECC82 ECC802 E80CC E82CC E2163 B749 B329 CV491 CV4003 M8136 Tube 6DJ8 or R hre 6DJ8 ID4763 Double Triode Noval 9 pin miniature USA pico 9 B9A and shown. One of those was a direct coupled EF86 to 6DJ8 circuit a very simple design with a unique passive RIAA eq and a very basic power supply. If you 39 re starting off into tubes you might want to get 10 or so 6N23P 6DJ8 Jul 30 2013 The 12AU7 is a miniature 9 pin B9A base medium gain dual triode vacuum tube. 11 Posted by TNT on 2000 12 01 17 42 09 199. Tubes for testing can be mini nine pin twin triodes such as 12AX7 12AY7 12AU7 12AT7 12BH7 6DJ8 6CG7 all non power tubes. I was curious what this French brand was all about I found through Google some references for 39 French military 39 39 radio equipment 39 39 Mazda 39 39 12AU7 39 but not a lot more. There are many equivalent tubes with different names some identical some designed for ruggedness long life or other characteristics examples are the US military 5814A and the European special quality ECC82 and E182CC. New amp NOS tubes from Electro Harmonix amp other brands 6DJ8 Matsushita Japan Mullard factory made 1970s vintage. I get the same gain levels at 7. Buy 6 up 17. Member Posts 30 Looking for a 6922 6dj8 based mic pre 7308 E188CC Mullard England NOS 1970 39 s Made in UK Mitcham factory E188CC 7308 Dimple Disc getter Probably the best quality Drop In Replacement for the 6DJ8 E88CC tube available These amazing tubes are known for their amazing midrange and detailed inner respolution and have some of the highest strength and test results we have seen in any TubesForAmps is your source for replacement vacuum tubes. Introducing the Psvane 12AU7 S read more. Tubes used for new hifi amps preamps and buffers The most popularly used tubes for hifi include the 2A3 amp 300B triodes KT66 amp KT88 beam tetrodes EL34 amp EL84 pentodes 5AR4 5U4G amp 274B rectifiers as well as the 211 805 amp 845 transmitting triodes for power amplification and the 12AT7 12AU7 12AX7 6DJ8 6SL7 amp 6SN7 for buffers drivers 12au7 ecc82 6sn7 tube tube p 12au7 headphone amplifier 6dj8 tube 12bh7 tube stereo tube preamp 6aq5 tube bass tube amp. Upscale News A. Mullard ECC81 12AT7 M8162. The low end seemed a little more full compared with the 12BH7. Back to Dynaco Upgrades Page The new L2 Phono Stage designed by Andy Grove yields a perfect RIAA curve using a 12AX7 input and 12AU7 output optional output tube available in a 6922 6DJ8 configuration . But my stock tubes read CCCP XII 80 6H23N Are 6N11 tubes used for an output stage After finished my simple 12AX7 tube preamp I decided to try other medium mu tubes including the 12AU7 and also this 6922. looks good sound good easily to drive. Promotion. New Old Stock original box. 12AX7 ECC83 E83CC 6DJ8 6992 ECC88 E88CC CCa 12AU7 5814 ECC82 E82CC Buy Cary 4pc 9pin Ceramic Vacuum Tube Socket Valve Base 12ax7 12au7 Ecc83 Ecc82 6dj8 Amps Tubes Amazon. That early script was used on many of the early Amperex tubes as I have quite a few of the ECC83 and ECC82 types with it. 6DJ8 EF86 6 Volt 47 Misc. 6V 0. 3mA the latter due to the closer electrode spacing. Hi. Changing tubes in an amp can be a particularly challenging experience especially since there seems to be such an abundance of them. So is for instance a 6DJ8 wich is made in the sixties by Philips in the Netherlands for an American colleague exactly the same as their ECC88 sold on the European market. 79. See below for more information. Germany in 1968. The 6922 is the improved version designed to lower microphonics and improve life span. To prevent damage to equipment it would be wise to double check with a good tube manual before actually doing a substitution. One thing to note is the massive filament draw of the 6N1P 2 X a 12AX7 filament current makes it real hard to run a bunch on DC. 6DJ8 AMPEREX Holland Orange print PQ silver pin A frame 35. RCA and Sylvania first introduced the 12AX7 to the world in the late 1940s. I usually prefer nbsp By the way the 6DJ8 also know as ECC88 is very similar but not exactly 12AX7 also called ECC82 followed the 12AU7 also called ECC81 with The ultimate version is the 7308 which is considered a 10 000 hr vs. whay can I say KT88 is the king of valves. Centre tapped heater permits operation at 12. 1 Rated E88CC Siemens amp Halske 1960 39 s O getter halo quot Rarest and most sought after CCa has quot gray or silver shield quot between plates and quot Frame Grid quot construction. I found them grainy versus clean. 6DJ8 ECC88 is the quot standard grade quot of this family. If even more gain were required say to drive an 845 transmitting tube to full output then a 6DJ8 6922 E88CC would do the job. So getting My preamp uses 12ax7 and 12au7 so I 39 ve rolled lots it is also voiced and sold with JJ 39 s which I 39 m familiar with. Ships from and sold by VIVA TUBES. 11 and it 39 s less compressed and more muscular at the same time. NOS 6550 KT88 Well this RFT does everything it was advertised to do. I have 6922 39 s in Seductions and 12AU7 39 s 12AT7 39 s and 12AX7 39 s in other gear and I know that 6DJ8 39 s can be used in place of 6922 39 s at least sometimes which suggests that the numeral 6 in 6CG7 might possibly not disquality that tube as a replacement for one starting lt p gt GroupDIY Project Specific Discussions Preamplifiers Looking for a 6922 6dj8 based mic pre schem. You 39 re right in that they are different though. 12 Volt 7 Tube The 12AU7 delivers a gain of about 50 in above cascode input stage which is enough to the drive the output tube to full output. 6DJ8 nbsp 20 Jan 2020 12AU7 RCA 12AU7 Black Plate Square getter 1957 RCA 12AU7A And when it comes to tube versus SS versus hybrid designs I embrace all. Seeking a ultra low noise ultra musical ECC81 12AT7 for your phono stage or line stage here it is. 6DJ8 pdf Bold designators are close or identical Italic designators are different ratings different pinouts or different filament voltages. Real European NOS tubes is becoming very Apr 14 2020 Tube Rolling the Little Dot MK3se 6DJ8 6922 Auris Euterpe DAC AMP Xduoo Ta 02 and Ta 05 6J1 5654 Xduoo Ta 01b Ta 10 Ta 20 12au7 Xduoo Ta 03s 6s19p 12au7 Xduoo Ta 30 12au7 5U4G Introduction to OpAmps Burson Op Amps v5i and V6 SparkOS Discrete Opamps Staccato Discrete Opamps Equivalent to the 6DJ8 ECC88 6922. However IMO the 6SN7 sounds way way better than any 12AU7 I to me a good compromise of gain vs bandwidth vs coloration compared nbsp I have only 12AX7 and 12AU7 tubes witch one of my tubes can I use to 6N1P 6N2P 6922 6H30 6DJ8 7DJ8 7308 ECC88 E88CC E288CC nbsp swapping 6DJ8 ECC88 FOR 12AT7 39 S. 6N1P and 6N23P are interchangeable. I 39 m sure the circuit design has a lot to do with the sonics but the tube choice 6DJ8 vs. com Mullard 12AX7 . From 95 View. 1968 1978 The classic Tele 12AU7 as with the 12AX7 this is one The original 6DJ8 developed by Amperex in 1958. However IMO the 6SN7 sounds way way better than any 12AU7 I have done the listening tests FWIW . And no fizz I was a bit worried that it might sound less dynamic or harmonically rich than other tubes in the JTM45 and JMP settings but it exels there too. A lower distortion replacement is the E80CC with slightly different operating parameters and double the filament current requirements. Would a 12AU7 work as a roll in After reading the TJ review they do a 12AU7 on their site. 5 on the dial vs. 00 AB May 27 2020 3 FOR SALE E88CC ECC88 6DJ8 6922 6N1P E 6H5n 6H1n very nice strong tubes Vacuum Tubes Valves good variety 12au7 6189 6680 5814 ecc82 5963 black plate grey plate d and o getters 3x mica ALL TESTED ON A BK 606 OR SENCORE MIGHTY MITE NO LEAKS OR SHORTS DETECTED ANY WITH VALUES WAY OUT OF BALANCE ARE DISCARDED RFT ECC82 12AU7 M. TRIODE FLIPPER with Vibration Reduction Base for 12AX7 ECC83 5751 ECC82 12AU7 12AT7 ECC81 6DJ8 ECC88 6922 E88CC 7DJ8 PCC88 12BH7 etc. I make Siemens vs. Suitable for Fatman audio amplifiers. Android iOS mobile. The design is almost the same as the 12AX7 preamp it is a single gain stage triode tube with cathode follower. MULLARD 12AU7 ECC82 One of the best new production 12AU7 they 39 re well made low noise and have long life. 12AX7 Found a stash of 12BH7a tubes in Grandpa 39 s shed. Relay turn on circuitry tube compliment 1 12AX7 1 6DJ8 1 12AU7. Amperex 12AU7 . Jan 27 2014 These are the rarest of the rare 1957 Amperex 6dj8 pinched waist. The gain is only 3dB less than 6SN7 for most apps. I haven t had a lot of experience with the 12A 7 family of tubes in audio but I must say it has been more positive for the 12AT7 than the U7 or X7. Tube Depot carries a selection of 6DJ8 6922 ECC88 E88CC CV2492 Pre Amp Vacuum Tubes. Radio tubes are valves. Sonically these have a smoother presentation than the Tung Sol. the Sony DVP S7000 Theta TLC and the ARC LS7 pre amp with the Matisse Fantasy Line Mk I. See reviews. US made 6DJ8 RCA GE SYLVANIA nbsp 4 . Amperex 12AU7 used tested orange print 30 6DJ8 6922 7308 12AU7 ECC82 CV4003 6189 B749 A widely used nine pin B9A dual triode commonly used as a line driver and phase splitter in HiFi pre and power amplifiers tube mics and guitar amps. Pairs DEC 1979 MINT NOS NIB Neutron LABEL Made in Hungary Same Date and Batch Funkwerk RFT ECC82 12AU7 M. contact us 4 Pinehurst Lane Minesing Ontario L0L 1Y2 705 737 6773 tel 705 737 6774 fax email us here. Direct replaceable 12AU7 ECC82 tubes Many tube amplifiers use the common 12AU7 ECC82 and various simular versions such as the 5814 5963 and 6189 tubes. Mac Mini gt Singxer SU 1 gt Lampizator Amber II gt Rogue Cronus Magnum gt Aural Acoustics Model B. Pairs Early 1970s TWIN TRIODE 12AX7 datasheet 12AX7 circuit 12AX7 data sheet GEC alldatasheet datasheet Datasheet search site for Electronic Components and Semiconductors One thought on ECC82 12AU7 E82CC ECC802S julius March 4 2015 at 3 55 am. Your Price 18. Equivalent to the E88CC 6DJ8 and 7308 valve type too. Characteristic plate curve program for pentodes Old program. JJ ECC802 long plate vacuum tube. by Roger A Modjeski About The Author Roger Modjeski received a BS in Electrical Engineering in 1973 from the University nbsp 20 Mar 2010 In my tube stash I 39 ve found only one 6DJ8 a nice old Amperex and found 5 Telefunken smooth plate 12AX7s and an RCA 12AU7. And the graph that follows shows the distortion harmonics for the same 1Vpk 1kHz into the 300 ohm load. com FREE DELIVERY possible on nbsp 8 Jun 2018 The 12AX7 12AT7 and 12AU7 all belong to the same family of nine contact twin triode tubes. Our 6AU6 version of the board is also available but does not support 6922 6DJ8 7308 or 6CG7. It is often used for Hi Fi applications. Top Brand pre amp tubes in stock ready to ship 12ax7 12au7 12at7 12dw7 ECC83 ECC82 ECC81 CV4004 ECC823 5751 7025 B749 B759 and plenty more amp tubes Jun 12 2019 Overall this is a middleweight vs a flyweight fight and not exactly fair. authentic vintage input valves from the golden age. ANOS Amperex Bugle Boy 12AX7. Using 12BH7 in the input was nice but the 6Fq7 6CG7 was even better. Personally there is always something special to me about the sound of a preamplifier built around the 12AX7 or 12AU7 tube they just always seem to paint the sonic picture with a little bit more air and gradation than the 6DJ8 6922 designs do and feature more sonic gradation between heavy and soft tones than a preamplifier utilitizing the Ecc35 vs 6sl7 Mullard 12AU7 Matched Pair 35. pins tip The 5963 has a slightly lower plate voltage rating compared to regular 12AU7. Amperex 6DJ8 ECC88 Bugle Boy. Up against the equally simple Seduction circuit that used a 6DJ8 to 6DJ8 design the circuit was deemed too tubey and dull sounding and so the simple all 6DJ8 circuit was the design we developed into the JJ ECC82 12AU7 Vacuum Tube. It is distinguished by its very high transconductance mostly the result of its frame grid construction. The 12AU7 is a 9pin mini which makes it less bulky Author Maria Quiroz Created Date 11 6 2005 4 48 06 AM 12bh7 vs 12bh7a. A ruggedized extended ratings version of the tube is designated 6N1P EV Russian 6 1 . A lot of the love goes to the 12AX7 and the 12AT7 but the 12AU7 is ignored. Sep 10 2014 ECC802S 12AU7 ECC82 Tube SRPP Preamp Build Details. The 12AU7 has a higher plate dissipation and can stand quite a bit of voltage swing more than the quot other quot common tube the 6dj8 6922. The same is true for resistors and I m just about off the 12au7 marry go round and pretty much bounce back and forth from Amperex Long Plate Foil Getters and the Valvo s as they fit my system just right . Hello I ve bought Telefunken 6922 matched pair from ebay good seller with hi rank. 00 K40Y 9 200V 1. I was wondering if I could throw one of nbsp The Suitability of the 6DJ8 for Audio. In stock E88CC is the European Name of 6922 6DJ8. In their numbering system the 6DJ8 was an ECC88 the 6922 was an E88CC and the 7308 was an E188CC. Jul 8 2014 1957 Mullard Thomas 12AU7 ECC82 CV491 17mm Long Plates 39 k61 39 Square Getter Tube Mullard any kind of drive amplifier just a half of 6DJ8 12AU7 enough to drive. 6922 Premium 6DJ8 Dual Triode 60. This tube carries all three designators CV4024 12AT7 M8162 FOR SALE Mullard ECC82 12AU7 NOS Shield Logo 4 Tubes Available Vacuum Tubes Valves 250. Many will get a little gleam of love in their eyes and start gushing about how it s the pack mule among tube circuits with a mean kick that s perfect for driving tone stacks. When a designer sits down to design an amp most times they 39 ll wo . Ask vintage amp enthusiasts about the cathode follower at your own peril. They are my favorite. Over the past several months I have been working on a new 2015 Musica Bella LeAnna preamp circuit. 7025 Vs 12ax7 Oct 13 2016 This is a nice even tube that works well in stock situations insofar it gives one a reference sound once some burn in has occurred. 6922 E88CC is a quot premium grade quot version of the 6DJ8. ANOS Amperex Bugle Boy 12AX7A. The Tube Shop Supplier of Vacuum Tubes 12AX7 ECC83 12AT7 ECC81 12AU7 ECC82 5751 6922 6DJ8 thetubeshop. Click here to view a low resolution fast download version of the L2 Pre amplifier Construction Manual. The 5U4 Tube The 5Y3 Tube The EZ81 Tube The GZ34 5AR4 Tube Speakers and Parts. E88CC 6922 6DJ8 JJ Electronics. 12AU7 ECC82 JJ Electronics twin Triode. Moving up the Plenue M2 gets in a few punches and makes it a bit more of a battle. Pairs Late 1960s MINT NOS NIB Halo Getter with Fat Extra Support Rod E. The design is exactly the same as the 12AX7 preamp it is a single gain stage triode tube with cathode follower. From 449 View. 170 Is 6189 the same as 12AU7 any kind of drive amplifier just a half of 6DJ8 12AU7 enough to drive. However some of the U7 like variants were fairly decent. The cascode is a means of using a pair of triodes to achieve very high levels of gain and input sensitivity from a single stage. 6DJ8 ECC88 SRPP Tube Preamplifier Schematic Tube RIAA Phono Hi Fi Preamplifiers. This is a premium version of the 12AU7 made only by CBS Hytron. . However there is an important difference a 1k quot stopper quot resistor is added at each grid input. 6N23P EV E88CC 6DJ8 Reflector tube tubes store. Text in other languages may differ Dimensions WHD incl. 12BH7 Tubes Below is our current selection of 12BH7 audio tubes. AAD 7001 by Phil Jones Vifa MTM Speaker OrCad Speaker Crossover Simulation . I also like the 6FQ7 6CG7 in the input stage of the Aikido pre. The 12AU7 can run on either 12. We design and manufacture our tubes engineered for demanding high fidelity reliability and overall warmth. 2. All selected and tested on the Amplitrex AT1000. 00 AB May 27 2020 2 FOR SALE Psvane ACME Supreme series 300B vacuum tubes pair Vacuum Tubes Valves 950. Most all the Philips factory production are fine quality tubes. From 140 View. PrimaLuna 12AU7. The 12AU7 ECC82 Tube The 12AX7 ECC83 Tube The 12AY7 6072 Tube The 12BH7 ECC99 Tube The 6DJ8 6922 Tube New Rectifier Tubes. 12 Apr 2014 NOS Ge 6dj8 Ecc88 Smoked Strong balanced I have four of them . Made in blackburn lancashire great britain. The presence or absence of shielding on a cable will help All about Tung Sol Vacuum Tubes. Just imagine a chassis with four noval tube in the center flanked by 300Bs. . 6DJ8 and ECC88 are drop in Oct 04 2010 And of course 100 pin compatible. Sylvania 12BH7 pinched plate from the 60s Sound is a little richer than the Amperex. This one uses a single 6922 6DJ8 tube vs. 90 days warranty on tubes 12AU7 ECC82 CV4003 6189 B749 A widely used nine pin B9A dual triode commonly used as a line driver and phase splitter in HiFi pre and power amplifiers tube mics and guitar amps. com. Direct Replacement or Higher Quality. Microphone Tube Test Amperex RCA 6DJ8 ECC88 Tube Shootout Part 1. We are very excited to have added our newest current production tube. Germany Our newest version of the EF86 board has been slightly revised to accept 6922 6DJ8 7308 and 6CG7 in the phase inverter position as well as 12AU7 12BH7 and ECC99 that were previously supported. Radiotechnique 12AU7. Specifications pictures technical information. They don 39 t come cheap though assuming that you can find one. Aug 25 2013 2 The 12BH7 requires no circuit modification to substitute for a 12AU7 but the plate resistance is a little lower 5300 vs 7700 . E188CC. Many 6922 designed pieces will run 12AX7s. It provides very smooth mids and high end with a lot of nbsp Minimum order of 10 per size. 158 Re Vogue Audio 88 vs. 4 mA to at least 6mA and the trend continues to flatten to 15 mA. 3 sold. 12AU7 ECC82 VALVES USA 1960 VINTAGE TEST STRONG 12AU7 ECC82 made for and used in Conn organs USA. 00 PER PAIR 12AU7 mu 17 Released October 1946. 6V Option 2 Converts a 6SN7 tube to a 12AU7 socket. have extended lifespan when compared to power output tubes. The 12AU7 is probably the first Noval B9A tube ever registered on October 18 1946 in the Electron Tube Registration List followed by the 2C51 registered on November 25 1946. May 18 2019 ECC83 vs 12Ax7 Tubes What is the Difference One of the more confusing things about tube amps is changing them especially when there seem to be so many different kinds available. DOUBLE TRIODE ECC82 is 12AU7 medium gain pre amplifying double triode. 2. Jul 22 2019 In the category of widest bandwidth and the winner is 6DJ8. I selected the 6DJ8 for its linearity and good operation at a 35 40 V anode voltage. This would mean that the 12AU7 would give about 9dB of gain at full volume. Mullard produced the highest quality tubes in the world. I found a brand I didn 39 t know CIFT or as some write it CIFTE. 188. 99. My brother scored me several Amperex Bugle Boy 6DJ8 for 1 each. Miller C is therefore only marginally lower then 6SN7. 12bh7 vs 12bh7a. 169 My apologies for my mis interpretation and misunderstanding. Many other noval valves such as the ECC88 6DJ8 and 6N2P have a 39 9AJ 39 pinout which only allows the heaters to be operated in parallel from 6. size size x small Of course is the 6N1P pin compatible with 6DJ8 ECC88 6922 7308 E88CC etc. Nov 16 2010 The 6N23P is closer to a ECC88 6DJ8 than the 6N1P but reviews are mixed as to which one sounds better. The 5963 has a max plate voltage of 250V while 12AU7 has a max of 330V. The 6SN7 is more linear but both tubes are very useful and I use either when it suits me. Most have gold plated pins but many Sylvania manufactured 6922 39 s have steel pins a few Sylvania 39 s are gold pin . This tube has a specially designed cathode which can withstand long periods of time in cut off without hurting the tube. MATCHED PAIRS JUST 50. 15A. 6DJ8 has similar electrical performance however filament wiring structure audio lecture 53 12AU7 vs 12BH7 simple theory and real nbsp 26 Oct 2014 Without going into some of the more obscure tube types I played with the 12xxx series 6SN7 6SL7 types 5687 and the 6922 6DJ8. The UI on the M2 is a bit more polished and the ability to turn the player to show the screen in landscape mode makes seeking out tracks or albums a bit easier. Lovely warm rich british mullard sound. 169 Re JAN Phillips 6189 vs. Only the imprint is different. Nigel thanks The miniature types 12AU7 17 12AT7 60 and the ubiquitous 12AX7 100 appeared after WWII. The 12AU7 is 20dB of gain so maybe a 10dB pad would be sufficient A simple voltage divider with a 24. Although originally intended for deflection service its fairly low plate resistance and decent linearity make it an interesting choice as a driver for power tubes as well as a suitable voltage gain input tube for output stages Mu of 17 so output stage bias of 20 to 30 is ideal . This is mainly true for circuits that use an anode resistor load. Dipped into 6922 s and feel Siemens CCa s reign supreme even over the Amperex Pinched Waist and Philips SQ 7308 . For the 6DJ8 6922 ECC88 E88CC mu is constant within 20 from 0. Developed by Amperex in 1958 when transistors were already starting to take over the electronics industry amp originally developed for video amp radar use the 6DJ8 has come into heavy use in audio over the last 15 years. 15ma max plate current vs 12AU7 at 20ma so not giving away much. While i was nbsp 28 Dec 2016 I picked up a matched pair of Amperex BugleBoy 6DJ8 tubes from Brent Jesse for my Schiit Valhalla 2. 6DJ8. Today it is by far the most common preamp tube used for electric guitar amplification and there is an almost overwhelming supply of current production options to choose from. The following should be direct substitutions. For example my Deluxe Micro amp uses both triodes of a 12AU7 rated at 5. Current production and New Old Stock 12AU7 ECC82 Valves in stock and available now from The Valve Store Melbourne. The ECC88 6DJ8 would not be a good substitute for the 12A 7 quot family quot of tubes. The best NOS 12AU7 tube is in my opinion Mullard. Young Ahn 2 885 views. Browse our latest Thermionic nbsp Ceramic 9pin B9A PCB Mount Tube Socket For 12AX7 12AT7 12AU7 6DJ8 ECC82 5670 6922 Hifi Audio Vintage AMP DIY Tube socket comparison chart. Set TRIMODE to 0 for pentode mode 40 for ultra linear mode 40 tap or 100 for triode mode. Click Here for NOS 12AU7 Tube Inventory. An exellent current manufactured valve. Siemens E288CC 8223. What does 6H23N mean Who the hell knows I sure don t. E88CC. For guitar amps it can be imagined to be a simulation of a pentode and indeed the circuit does resemble one. A Comparison of Current Production 12AX7 Tubes. 7730. VG2NOM has no effect in triode mode. 192. You could use a tube pre amp for decades and possibly still not have to replace tubes despite the fact virtually any modern pre amp runs in class A operation. It provides very smooth mids and high end with a lot of detail. This circuit uses 6DJ8 tubes in a two stage RIAA phono preamplifier followed by a one stage line preamplifier with a volume control input. Please see the substitutes at the top of the page for more details Jul 24 2016 12AU7 ECC82 Cathode Follower Tube Preamplifier Schematic 5687 LED bias Tube Hi Fi Preamplifier Schematic Project 6DJ8 ECC88 SRPP Tube Preamplifier Schematic With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use there are generally equivalents for most types of tube. ECC81 12AT7 6201 R. My Audio Research LS1 takes 6DJ8 or 6922. Eli D. 54. Regular price 29. jeff vinylkid58 Dec 29 2016 11. Wb lt p gt The SRPP circuit has also been referred to as a SEPP Totem Pole Mu Follower Mu amplifier and Cascoded Cathode Follower. See my 6DJ8 shoot out on this site. 6dj8 vs 12au7