Mullard CV4024 / 12AT7 Platinum Grade / No Cryo Reviews

4.8 Rating 50 Reviews

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909.931.9686

Email:

joel.m@upscaleaudio.com

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2058 Wright Avenue,
2058 Wright Avenue
California
91750

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“Bought a pair of these for my Craig Merz OTL mono amps. All I can say is that, those Mullards are wonderful. The mid range is what caught my attention at first, and the top end open and clear. No harshness here. Wonderful indeed.”

1 Helpful Report

Posted 10 years ago

“Bought this to replace a new production EH12AT7 Goldpin tube. I am really pleased with the sound improvement. No harshness in the treble and better reproduction in the bass. This is a really good tube and worth the money.”

1 Helpful Report

Posted 10 years ago

R. Kim Shultz, Composer, La BohÃ¨me Music

Unverified Reviewer

“I replaced the stock tubes in my ART PRO VLA II leveling amp and the sound is amazing. What a great buy - Thanks Upscale Audio for the great product at a low price!”

1 Helpful Report

Posted 10 years ago

“I replaced one of the two 12AX7's in my Fosgate Signature phono preamp with this NOS Mullard (an option offered in the owner's manual), and the highs are now much improved. Furthermore, I paid much less for the replacement.”

2 Helpful Report

Posted 11 years ago

Bruce Brown / Puget Sound Studios

Unverified Reviewer

“Bought 6 Mullard CV4024/12AT7 tubes from Kevin on the recommendation of Myles Astor. They're going in a custom Doshi Audio Tape pre-amp. The tubes that came in it weren't bad. They were quite good and quiet as well. I put the Mullards in and let them settle in for a day or so before I did any critical listening. To say they took the Studer/Doshi to another level is an understatement! The Ella Fitzgerald tapes clearly had body now. The stock tubes made her voice sound a little thin. The Who and Bad Company tapes took on a low end that I have never heard from 60's and 70's rock. The tapes had plenty of top end which the tubes brought out without sacrificing any of the kick and bass. I'm a convert on now and will be replacing the tubes in my other equipment! Thanks Kevin!!”

1 Helpful Report

Posted 11 years ago

“I'm using these now in the front sockets of the Prima Luna Prologue Premium Integrated; I find 12AT7 works far better there than 12AU7. These are noticeably better than the Amperex orange world globe 12AT7's in the low bass and upper highs and both seem to have a bit more mid range warmth than pure neutral. I give them 4 instead of 5 stars because they do get a bit heavy handed on massed orchestra”

Helpful Report

Posted 11 years ago

“Am moved to write to tell what a huge improvement my new Tungsram 12AX7s and Mullard 12AT7s have made in my VTL 5.5 preamp. They replaced five-year old Tesla J-Js. Count me a convert to super tubes. I notice an immediate full-range improvement---bass seeming to go down another half octave while everything else has new charm, sophistication, and vividness. Really. I'm a believer now.”