GE Military Stock 12AU7 / 6189W Kevin's Stash / No Cryo Reviews

4.9 Rating 37 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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“Started out with 2 in the central positions of Prima Luna power amp, which completely changed the sonic character of the amp for the better. Added 4 more when one of the OEM tube started to get noisy. The impact to sound is much more subtle, primarily a reduction in background noise.”

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Posted 4 years ago

Ken Hardesty

Verified Reviewer

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Posted 4 years ago

Paul Creighton

Verified Reviewer

“Stunning improvement over the JJ stock tubes in my Odyssey Candela preamplifier. I have Khartago monoblocks and Kismet floorstanding speakers. Finally I hear why Klaus B. at Odyssey raves about those beryllium tweeters and sliced cone drivers; synergy in spades!”

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Posted 4 years ago

“Using these tubes in my pre-amp. The previous tubes were Ratheyon and had a touch of flabby bass and lushness but enough detail. The GE’s have a nicer midrange but still have extended bass. They keep sounding better the more I listen. Very nice tubes.”

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Posted 4 years ago

“As Kevin has said, a very quite tube. Very neutral sounding with a full and linear frequency response from top to bottom. Best to get a pair of these before they are all gone!”

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Posted 4 years ago

Glen Piegari

Verified Reviewer

“I just love these as followers in my EVO 100.”

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Posted 4 years ago

Conor Buescher

Verified Reviewer

“Very impressed with this tube. I purchased 4 in total; 2 for my PL EVO 300 pre-amp and 2 for my PL DiaLogue Premium HP amp. Still getting used to them in the system but overall the change is immediate and noticeable. Particularly in the soundstage. Recommended.”

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Posted 4 years ago

Steven J Almasi Jr

Verified Reviewer

“Ive had the JAN's in my Golden Tube Audio SI-50 from the beginning, (21yrs) and those had become a snag microphonic, but i play the hell out of this amp. It was Sweeeet to find freshies and to get back to listening. I had recently had new EL34's put in and the preamp tubes were replaced with JJ's and at about noon to 1 on the volume the JJ's would breakup it wasn',t pretty, this ain't happ'en now. Nice,clean,firm connection and sparkly, almost made a ring setting for them. Anyway, Thank you so much to everyone at Upscale the tubes are working wonderfully!”

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Posted 5 years ago