Brimar CV4003 / 12AU7 Platinum Grade / Yes Cryo Reviews

5 Rating 49 Reviews

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909.931.9686

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2058 Wright Avenue,
2058 Wright Avenue
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John Plascak

Verified Reviewer

“I use these in the 2 middle locations in my Prima Luna EVO 400. They are such an improvement I ordered a small stash as back up.”

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Posted 23 hours ago

“Second pair. Loved the last ones but they started getting noisy after a few years.”

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Posted 5 days ago

“This tube raised the level of my amp’s sound remarkably. Tonality and detail vastly improved.”

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Posted 1 month ago

“Gorgeous, balanced sound in the preamp position of my Rogue Cronus Dark. Replaced the stock Psvane Art series which is no slouch in its own right. This added just a little more presence in the midrange to make voices shimmer a little more :) Great service from Kevin & Co. In replacing a defective tube - you guys rock!”

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Posted 4 months ago

John Plascak

Verified Reviewer

“I placed these tubes in the front end of my Prima Luna EVO 400 integrated. I believe the sound is better. Everything sounds really tight and I think the mid range is vastly improved. Great upgrade to an already great amp.”

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Posted 5 months ago

Alonso Bayardo

Verified Reviewer

“By now I’m never skeptical of Upscale Audio , recommendations, over the years they have been stellar. So when I found out that Kevin’s private tube collection was available, I immediately made my order. I expected a subtle difference from my PrimaLuna Evo 400 Integrated Amp . Totally shocked that it was subtle at all , basically the Brimar tubes significantly defined the mid range causing the high and lows to sound tighter, a truly audible three dimensional soundstage . Once again , no bill , no selling / marketing blah , instead, let the product speak for itself . Strongly recommend those on the fence line , buy now before their gone . There’s a reason why Kevin has been hoarding these tubes and is so reluctantly sharing them now . Thank you guys …AL .”

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Posted 6 months ago

“This was for a Vincent 701 replaced a new issue Genlax gold lion that had replaced the stock JJ. Should have got this one first. In my system this tube is spectacular. Thanks Upscale you guys are the best for tubes.Very much like the way you rate your tubes.”

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Posted 8 months ago

Brian Hecker

Verified Reviewer

“I love French silk pie. These tubes are the audio equivalent: silky, smooth, rich and creamy. Transformed my Cayin HA-3A into something truly special. I can listen for hours and experience true bliss. Thanks Kevin, these are a game changer!”

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Posted 8 months ago