Mullard CV4004 / 12AX7 British New Old Stock Platinum Grade / No Cryo Reviews

4.9 Rating 41 Reviews

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“The English have a certain way with words and gobsmacked is a particularly good word to describe my gut reaction. I purchased the Mullard CV4004 along with the Radiotechnique 12au7 for my Cayin HA1A headphone/speaker amp. Others have more eloquently described their experience with this combo so I will just say I agree with everything you will read in these reviews. I am a casual audiophile with a relatively modest system cobbled together over the years. If you are like me, you have champagne ears on a beer budget, and when you upgrade you cannot afford expensive trial and error. You need to get it right the first time. Spending $300 bucks on 2 tubes seems like self indulgent lunacy... and it is! BUT, for less than the price of my best power cord (and I am VERY pleased with my best PC) The improvement to my system is nothing short of incredible. The cool thing is that all my sources sound better because everything goes through this amp. Talk about bang for the buck! So if you are into self indulgent lunacy (as in you are an audiophile) then you should try these tubes.”

Helpful Report

Posted 9 years ago

“What glorious tubes these are. I was expected the wonderful warm midrange but not the detail and the amount of presence displayed. Paired with MULLARD 12AU7 the sound was warm but the treble lacked a little sparkle and the lower tones just a bit too warm. Paired with RADIOTECHNIQUE 12AU7 rectified this the highs now extended with just enough sparkle and bite and the base now was tight deep with lots of drive. Rhythm and timing now excellent. In my system this is a marriage made in heaven. I had thought the RADIOTECNIQUE was very good but this combo showed I had underestimated its talents. What are we going to do when these wonderful old tubes disappear.”

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Posted 9 years ago

“This is the first time I have replaced the tubes in my McIntosh c2200 preamp. Put me down as gob smacked. The smoothness and tone of the midrange were night and day. The soundstage was more vivid. I am stunned and amazed.”

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Posted 10 years ago

“Retubed my preamp with these. Wish I had done it years ago. Best bang for the audio buck since I went to stereo from mono. WOW!!!”

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Posted 10 years ago

“Replaced my Telefunken smooth plates in my Jolida JD100A Tubed CD player, and Wow! These Mullard's are much more dynamic. Bass is rounder, treble is smooth after burn-in. And the midrange is typical Mullard....very real without being forward. These are my favorite's!”

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Posted 10 years ago

“I purchased these tubes for my phono section, and wow, what a difference over telefunken.”

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Posted 11 years ago

Brian Anderson

Unverified Reviewer

“When I first put these Mullard 12AX7 tubes in my Calypso Preamp - there was allot of noise in the left channel. So I switched them around and the noise vanished. All that came out after that was a wonderful 3D sound with a lovely midrange and very quiet background. Very happy...”

Helpful Report

Posted 11 years ago

Xinyong Westchester NY

Unverified Reviewer

“I bought three tubes for my pre-amp. Super smooth midrange. I go to at least 10 operas every season in Met, some seasons 15, my ears don't cheat me. This tube sounds just right in my system for operas. Not too warm, very low noise, balanced and focused with super smooth midrange. My system- Rega p5, EAR 834P, LFD integrated Amp, Harbeth P3. The packing is just perfect. Buy with confidence.”

Helpful Report

Posted 11 years ago