Brimar CV4003 / 12AU7 Platinum Grade / No Cryo Reviews

4.9 Rating 147 Reviews

Visit Product Page

Phone:

909.931.9686

Email:

joel.m@upscaleaudio.com

Location:

2058 Wright Avenue,
2058 Wright Avenue
California
91750

Visit Product Page

“I threw one into my phono preamp and took out the new production, $20 mainstream brand that was in there. OMFFFFFFG I have s400 Buchardt which are .... dark ... and now they sound like wide open but not like KEF thank god. If you have a phono stage and looking for a U tube, this one does nicely. Bass is solid and deep. Clarity is superb. Stage is wide and forward. Treble is exaggerated but not sharp at all. But if you have KEF speakers you'll understand why I hate them.”

Helpful Report

Posted 3 years ago

James Farnsworth

Verified Reviewer

“Replacing previous set of Brimar’s in my Dialogue preamp. They lasted for years despite me being an idiot and leaving it powered on 24/7! Fast delivery and stellar tubes. May even turn it off every now and then...lol”

Helpful Report

Posted 3 years ago

“Brimar = Outstanding!”

Helpful Report

Posted 3 years ago

“I really can’t tell a difference.. Maybe I’m doing something wrong. I would also like to say Sean was so helpful. I had fantastic interaction with him and another one your staff (his name slips me right now). They were awesome so for that I say thank you. Enjoy your day”

Helpful Report

Posted 3 years ago

“I’m not a customer of Upscale Audio I live in the UK but when I was looking to change my amps I watched Kevin’s comments about expensive Pre amp and Power Amps and decided to track down some Prima Luna Dialogue amps this was not easy in the UK because most dealer want to sell you some very expensive equipment and the Prima Luna's just did not fit with their business model i.e. not profitable enough. So, I popped over to Holland and listened to them there. Anyway, to cut a long storey short I ended up buying a Prima Luna Dialogue Premium Pre and two HP power amps. Anyway, I then decided to change the stock 12AU7’s for some Brimar CV4003s these have had good reviews in the UK and at Upscale so I bought six for the pre amp and these are just great smooth open bigger sound stage more air. I like them so much I have ordered a set for both power amps and a spare set for the Pre buy them while you can.”

Helpful Report

Posted 3 years ago

Howard Murray

Verified Reviewer

“I'm very impressed by the Brimar CV4003 tubes and the subtle yet intriguing difference to music through my Primaluna Dialogue Premium HP. I'm hearing instruments not noticed previously. My hat is off to Upscale Audio for the fantastic job done on the packaging of the tubes. Our postal service can be a little rough on fragile packages, but the tubes arrived safely insulated inside a wonderful cushion of foam noodles.”

Helpful Report

Posted 3 years ago

James Cervantes

Verified Reviewer

Author didn't leave any comments.

Helpful Report

Posted 3 years ago

Mark Livertovski

Verified Reviewer

“This is better than mullard”

Helpful Report

Posted 3 years ago