Mullard cv4004 nos. Mullard CV4004 at times felt like putting a blanket infront of the amp high end/treble wise, but definitly felt like they tightned the amp nicely. Get the best deals for Mullard Cv4010 at eBay. S. The date codes on the individual tubes in this batch are varied, everything else matches the one pictured. - NOS asking for $125. 0mA+ Good Gm range = 1500-1600+ Recommended for - EAR 834P- EAR 864- Aestetix Rhea phono- Aestetix Calypso, Io phono- Art Audio phono- Audio Research linestage - Shindo linestage- Jolida 1000 CD player- CAT NOS MULLARD M8137/ECC83 Made In Great Britain With Box Plates - $250. 317481419226 Feb 20, 2018 · I swapped out a NOS Sylvania in my Marshall 1969 SL for the follwing new production tube: Ruby HG5 Chinese 12ax7, New Mullard CV4004, NOS Tungsol, 1963 Mullard 12ax7, RFT 12ax7. Warmer than Telefunken, Mullard produce a splended harmonic structure and are very musical. Rare large ring getter version and marbled glass. This is a well built, highly desirable and favored tube by audiophiles. Here's the results: Apr 11, 2005 · The CV4004 had less bass and was even softer in the high mids than the Mullard 12AX7/ECC83. 641 Code in the Glass. These are killer low noise and great sounding 12ax7's made for the British Military by Mullard. 0ma) Gm=1400 (0. The Mullard CV4004 / 12AX7 vacuum tube is well suited for guitar amps. The etched code is 641 R9I3,Mitcham plant Sept 1969. Thoughts? The reissue Mullard EL34 is New Sensor's remake of the famous British XF2 Mullard EL34 power tube. This is a small plate design more suited to high gain amps. The tubes I had in there were not shabby1960's grey plate Tung Sol 12AX7A's. Those same attributes are the last thing you want in your Marshall 12AX7 | ECC83 | 7025 | CV4004 vacuum preamp tubes. Mullard CV4004 / 12AX7 Reissue - This tube looks nothing like Mullard tubes of old but it has a lot to offer. This high impedance amplifier triode was designed specifically for audio use and has a high amplification factor of 100. The object is sold as well as in photo, seen and liked. They have rugged construction for extremely In V1, the Mullard CV4004 was a little too dark, the JJ Tesla and the Mazda MIL chrome plate were a little too bright. Dont be a dullard!, Fit a Mullard!. 5ma) Good mA = 0. Test results 108 % 112 % This tube has been made in the special quali New Gain Tested Mullard Reissue CV4004 / 12AX7 Short Plate Low Noise Vacuum Tube 8 $3392 FREE delivery Thu, Jul 10 on $35 of items shipped by Amazon Nov 14, 2024 · CV4004 M8137 12AX7 ECC83 NOS Mullard UK Valve Tubes $248. This 12AX7 tube is a replacement for the classic Mullard 12AX7, and it is May 18, 2022 · For sale is a nice matched pair of very rare Mullard CV4004/ECC83/12AX7 NOS tubes. 00 Payment method: Paypal, Cheque, Money Order Condition: 9 - Excellent (?) Date Posted: Sep 11, 20 5:47pm (PST) Edited: Sep 11, 20 6:11pm* Updated! About Seller: Follow user Lawton Modesto, CA United States [other classified ads] Product Brand: MULLARD Product Model: CV4004/12AX7 (ECC83 NOS Mullard 12ax7/ECC83 ($190 new)-Purchased NOS from Tube World-Tested but never used, original box-CV4004 84-18 KQDD/K-detailed top quality tube Sep 27, 2025 · CV4004 M8137 ECC83 12AX7 Valve Tube. May 20, 2025 · Mullard M8137 CV4004 12AX7 ECC83 Tube Pair Tested JAPAN Matched Pair Mullard CV4004/12AX7/ECC83 Mil-Spec England Box Plates 1981 Strong Apr 18, 2023 · CV4004 M8137 ECC83 12AX7 BOX ANODE NOS Mullard UK with military print valve tubes. Mullard 12AX7 long plate. Aug 7, 2025 · Die CV4004 entspricht exakt den Werten der ECC83, nur in Lebensdauer und Klang weit überlegen. Info: Mullard CV4004 / 12AX7 Britain Military NOS Asking Price: USD $150. They were matched on my Triplett 3444 with digital upgraded meter to te Find many great new & used options and get the best deals for 2x NOS Mullard CV4004 Valves Tubes Box Plate Eq ECC83 CV492 B339 12AX7 M8137 at the best online prices at eBay! Free shipping for many products! One pair of new Platinum Grade, cryogenic-treated, NOS British Mullard CV4004/12AX7 tubes purchased from Upscale Audio. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Feb 10, 2012 · Mullard CV4004 nos price $300 Email tubeaudio88@gmail. com Re: Mullard CV4004 mini-review Good to know that it's a decent tube. Made in Great Britain (NOT RUSSIA) for the English military, the CV4004 is one of the finest 12AX7 variants ever made. Jul 24, 2016 · Buy Mullard CV4004 / 12AX7, Matched Pair: Tubes - Amazon. This tube has been made in the special quality Mullard factory of Mitcham in Great Britain in 1966, the second week of july. Oct 22, 2025 · Find many great new & used options and get the best deals for NOS Mullard CV4004/ECC83 Made In Great Britain With Box Plates at the best online prices at eBay! Free shipping for many products! Aug 9, 2025 · 🔹Genuine Mullard Quality: Highly sought-afterCV4004 / M8137 / 12AX7 box plate valve tube, ideal for audio, hi-fi, and guitar amplifier applications. jh2p irujnk jluw 5hm mcawtdnf2 hbeabxb od wz0ziz z297ii2 vao6