Brimar CV4003 / 12AU7 Platinum Grade / No Cryo Reviews

4.9 Rating 143 Reviews

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2058 Wright Avenue,
2058 Wright Avenue
California
91750

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Ashton Burch

Verified Reviewer

“Pricey for small preamp tubes but audiophiles spend 5-10 times as much on cables and probably gain less performance than these tubes provide”

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Posted 3 years ago

“First of all I would like to thank Upscale for consistently providing top quality tubes. These Brimar 12AU7 tubes have a delicate air to them. They are one of my favorite input tubes for my amp.”

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Posted 3 years ago

Gregory Brigman

Verified Reviewer

Author didn't leave any comments.

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Posted 3 years ago

Anthony Lombardo

Verified Reviewer

“Excellent Tube... Wonderful in my Evo 300”

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Posted 3 years ago

Joseph Archila

Unverified Reviewer

“Yeah it’s like I upgraded my whole system really amazing every single thing got better from top to bottom - front to back and detail beyond - by a lot - more refined deeper bass - warm and luscious tones all around that seem have more hang time and texture than before with the stock Psvane. I used these in the PS Audio M1200 input stage. Didn’t lose any slam or dynamics they may have improved slightly. Fun Times!”

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Posted 3 years ago

“I can feed the immediate change on high end and mid tones when I replace the stock tube. I also tried Psvane 12AU7-T Mark Ⅱ which is way too bright for my taste. Brimar just has the right balance between airy highs and punchy bass. It refines the edge of highs and everything sounds smooth and pleasant. I never felt listening fatigue and this is so amazing. Anyone interested to the sound in my system please take a look of my channel https://youtu.be/nwWlSdSPVG4. It's only been played for around 7 hours and not burned in yet, while already sounds phenomenal.”

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Posted 3 years ago

David Windstrom

Verified Reviewer

“Initially shipped with defective tube that had had an air leak. Randall arranged for a replacement. These tubes combined with a previously purchased Brimar 12AX7 produced a beautiful euphonic preamp section for my EL34 based integrated. Very happy, and hope they last thousands of hours.”

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Posted 3 years ago

Charles Raines

Verified Reviewer

“Love them, I changed some interconnects, new dac and the center tubes in my Primaluna and the sound is just unbelievable. I honestly can`t say which component was the most responsible for the increased soundstage and dynamics but hey, the synergy is awesome so I`m happy and for an audiophile that is no small feat!”

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Posted 3 years ago