I am using some of Upscale's "Kevin's stash" Gold Lion 12AU7's and they sound great with 0 noise. They have a warmer sound than some of the others. Over the years, I have probably purchased @20 tubes from them. I've had very good experiences buying tubes from them. Same with Brent Jesse. In case you're interested I have a set of 4 reissued Mullard KT88's in my stash that I bought from Upscale and never used. If you end up trying out those Brimar 12AU7's, I'd be interested in your feedback.
Tube Rolling
Hi Guys, I am going to be tube rolling very soon with my Primaluna Evo 300 Pre-amp & Primaluna Evo 400 Power amp, Has anyone tried the new Brimar CV4003 / 12AU7 / 6189 for the gain tubes and the TAD KT88’s- STR Redbase for the power tubes ?
Many Thanks
Steve.