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Brimar CV4003 / 12AU7 Special CJ Test Grade / Yes Cryo Reviews

4.7 Rating 43 Reviews
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13,638
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Phone:

909.931.9686

Email:

joel.m@upscaleaudio.com

Location:

2058 Wright Avenue,
2058 Wright Avenue
California
91750

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Kevin DeMoss
Verified Reviewer
“These tubes sound really great all round but especially in the midrange. I'm still burning them in as I have about 20 hours on them so far.”
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Posted 1 month ago
Gery Mayes
Verified Reviewer
“These perform extremely well in my Cayin HA-6A. Even compared to RT's.”
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Posted 1 month ago
Tony Leopold
Verified Reviewer
“My favorite tubes. I had one fail with 48 hours of usage and upscale sent a matched replacement no questions asked. I’m impressed by their service and they earned my future tube business that’s for sure. Why this tube? It produces magical mids and an emotional connection like no other.”
1 Helpful Report
Posted 1 month ago
Jason Glisson
Verified Reviewer
“The Brimar CV4003 is being used in a Blackice Foz SS Sound Expander. Beats all other tubes I’ve auditioned.”
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Posted 7 months ago
Anonymous
Verified Reviewer
Author didn't leave any comments.
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Posted 9 months ago
Michael Kuzdzal
Verified Reviewer
Author didn't leave any comments.
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Posted 1 year ago
Juan Carlos Cazares
Verified Reviewer
Author didn't leave any comments.
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Posted 1 year ago
Ken Hahus
Verified Reviewer
Author didn't leave any comments.
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Posted 1 year ago
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