Mazda 6CG7 / 6FQ7 Platinum Grade / No Cryo Reviews

4.9 Rating 21 Reviews

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909.931.9686

Email:

joel.m@upscaleaudio.com

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2058 Wright Avenue,
2058 Wright Avenue
California
91750

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“Really nice! This is a serious upgrade over the stock Electro Harmonix tubes that came with my Stax preamp.”

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Posted 5 years ago

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Posted 5 years ago

“They sure do love CJ amplifiers. Thanks for the recommendation. I've used vintage tungsols/vintage RCA cleartops/vintage phillips and this is hands down the best. Pity is how long it took me to buy them.”

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Posted 8 years ago

“Excellent sound and love the look. The mids and highs are clean crisp and open with a full sound.”

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Posted 9 years ago

“I use the Mazda 6CG7 in my Stax SRM 007t. What an upgrade in soundquality! The Mazdas are very sensitiv, a lot more details. Not as punchy as the RCAs, but perfect for instrumental music, espesially classic.”

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Posted 10 years ago

“I finally found a use for two of these guys in the buffer stages of my phono pre-amp. They were very sandy-sounding in my line pre-amp compared with vintage RCAs or even new EH 6CG7s.”

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Posted 11 years ago

“In the past fifteen years, I have owned, or still own, tube components by Melos, Audible Illusions, JoLida, Dynaco, and Conrad-Johnson. SO I've done plenty of tube swapping. But I can't think of a single instance where replacing a pair of tubes has made such as sonic difference as when I replaced the stock 6FQ7 tubes in the Conrad-Johnson Premier 11a with these Mazda's. I have replaced most of the stock parts in this amp: bucket loads of film capacitors, diodes, rectifier bridges and resistors, almost always to good effect, and sometimes dramatically better effect. Having what I feel to be a very revealing component best facilitates judgement of the sonic attributes of tubes. The Mazda's give a more harmonically vivid, dynamic presentation with greater frequency extension in both directions. As LaBarca stated, these tubes draw the listener into the music in a manner that the comparatively lifeless stock 6FQ7 tubes could not. Highly recommended.”

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Posted 11 years ago

“These tubes are very musical-warmth and detail,my CJ premier 11A never sounded better...Thanks Upscale...”

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Posted 11 years ago