Brimar CV4003 / 12AU7 Special CJ Test Grade / No Cryo Reviews

4.9 Rating 40 Reviews
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2058 Wright Avenue
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Brimar vs. Mullard Firstly, I was immediately impressed with the low end that the Brimar brought out of my system. My Mullard does not dig as deep. The detail of the low end was improved, too. It was instantly noticeable. The high end was also nice and comparable to the Mullard, maybe just not as much air around cymbals and other high frequencies. Pretty close, though. However, the Brimar simply cannot compete with Mullard in the mid range detail. Not even close. Because of this I popped the Mullard back in after about 75 hours with the Brimar and the Mullard won’t be coming back out. I was impressed with the Brimar, and at roughly 60% the cost of the Mullard it might make sense for some people. Especially if you really need a bump in low end detail and mid range is not a concern for you. If and when the NOS Mullards become unattainable, Brimar will be high on my list of replacements, assuming they’re still available.
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Posted 3 years ago
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Posted 3 years ago
Lawrence Wall
Verified Reviewer
These replaced very old Telefunkens that still test good in an Atma-Sphere preamp. A little smoother, slightly lower noise floor, a bit more resolution. Very impressed with the improvement considering how good the Telefunkens are!
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Posted 3 years ago
Mark Gascoine
Verified Reviewer
This was only the second time I've tube rolled going from a stock tube in my Vincent Pho 701 to a PSVANE and now to a Brimar. I have about 50 or so hours on it currently. There was an immediate shift in phonics, the detail in the air was spacious and precise, the mids, with both male and female vocals becoming silky and smooth. The bass is presented in a manner that is tute and detailed. If you cant hear the difference after putting in this tube .. go find a new hobby. If you can... get one, you'll be looking at it on your equipment thanking it every time the stage is set, the intro begins and the music fills the soundstage.
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Posted 3 years ago
Frank Latina
Verified Reviewer
The Brimar 12au7 is everything Kevin said in his YouTube video. Smooth and luscious in the midrange with tight bottoms and excellent highs. I am using these in a Rogue Audio RP-1, and glad I have them. I think the Brimars are inline with the NOS Mullards, if not better...
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Posted 4 years ago
Bryan Peterson
Verified Reviewer
Sounds awesome. I was not expecting such a huge improvement. Thanks
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Posted 4 years ago
Great tubes!
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Posted 4 years ago
Exactly as described: beautiful sound!
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Posted 4 years ago