Radiotechnique 12AU7 / 6189 Kevin's Stash / No Cryo Reviews

4.9 Rating 17 Reviews

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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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Craig Hinkel

Verified Reviewer

“These are great tubes. I'm using them in my PrimaLuna EVO 400 IA. I purchased these as backups. Good NOS tubes are going fast. Your NOS Brimar 12AU7's are now gone. This is a shame. To my ears the combination of Brimar 12AU7's and Radiotecnique 12AU7's are awsome. I wanted to make sure I have stock for the long haul. I would like to thank Ken and Brandon for their help. You guy's are great.”

1 Helpful Report

Posted 3 years ago

Robert Pascale

Verified Reviewer

Author didn't leave any comments.

Helpful Report

Posted 4 years ago

Emerson Perin

Verified Reviewer

“I bought a pair of 12AU7's for my Sunvalley 845 amp. For being a Kevin's stash (and very expensive) I expected better measurements (83%/85% and 88%/91% respectively of iP/Gm specification on my Amplitrex T-1000. They sound fine. Good and great ...not excellent.”

Helpful Report

Posted 4 years ago

“Exceptional tube, really deep and detailed bass with this tube. I was able to pair them with some 1950's made in Berlin Telefunken 12AX7 tubes for the input stage and wow, just the best sound I have heard on my system. Light and airy with tremendous nuance and a wonderful sound stage.”

Helpful Report

Posted 4 years ago

Nathaniel Elam

Verified Reviewer

“Really nice!”

Helpful Report

Posted 4 years ago

Tomasz Trebacz

Verified Reviewer

“Replacement for Psvane tube in Vincent PHO 701. Results - SWEET!”

Helpful Report

Posted 4 years ago

“A noticeable improvement over JAN Philips 6189 in the V1 slot in my power amp. Seems to have a synergy with the Amperex Bugle Boys in the V1/V2 positions of my preamp.”