Radiotechnique 12AU7 Platinum Grade / No Cryo Reviews

4.9 Rating 50 Reviews

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Shayne Guyer

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Helpful Report

Posted 3 years ago

BEN WILLIAMS

Verified Reviewer

“Installed these 12AU7 tubes into my Zesto Andros Tessera phonostage. Solid performers replacing the stock JJ tubes. Excellent addition.”

Helpful Report

Posted 3 years ago

“I received 2 Radiotechnique 12AU7's, cryo/Kevins stash, today At a couple of hours play they are airy, spacious, nice top to bottom and overall very good I imagine they will improve more as I run them in further (I prefer 100 to 200 hours) They are in the front of my Prima Luna Dialogue preamp, next are cryo/Ciftes and in back cryo/Brimars With MoFi 3.5 Carbon (Miyabi) cartridge retipped/cantilevered by Peter Lederman of Soundsmith (very nice) on Origin Live Sovereign w/light speed control table, Enterprise arm and Boulder 508 phono preamp ect...high resolution, revealing and ROCKS !!! Great recomendation on the tubes (all of them) after bad experience with another companys failing & bad tubes (7 out of 12 in about 2 months) and returned them under warranty at a loss, they blamed my equipment :•( Never had problems like that with any other tubes or company in over 40 years The team at Upscale Audio helped me with that issue though it was not their problem Thank you all, Ron”

1 Helpful Report

Posted 4 years ago

“Found the tube a bit thin, recessed mid range and upper bass area. nice extended top end, very airy, and dimensional. After break in of 20 hours, the sound rounded out, with good bass , improved midrange and excellent top end. still found the midrange area and upper bass not as fleshed out as it should be. Prefer the Brimar to this soundbut it is enjoyable.,”

1 Helpful Report

Posted 4 years ago

“I swapped the 4 JJ 12AU7s in my Rogue RP7 with 4 of these Radiotechniques and couldn't be more pleased. The Radiotechnique have more extension in the low end, punchier bass, a more rounded mid range, and silky treble extension. They just sound more musical in all areas. I took a chance on these and glad I did! Really fantastic tubes and a great match for the RP7.”

2 Helpful Report

Posted 4 years ago

“Like My review of the Brimar tubes, this tube is very open and has a solid 3D effect on the sound. I use this on the output stage of my Prolugue Premium Preamp, and now on the input stage of my Dialogue Premium Preamp! Open airy highs with no roll off response all the way down to the floor! Matched with the Brinar tubes, that warm beautiful mid range is there with the open airy highs, and the mid lows to the floor will shake the house! Truly, one of the very best tubes for the Primaluna line! Just got an extra pair of these to stash away for the future. Probably going to buy more in the future just to have plenty on hand before they are all gone.”

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Posted 6 years ago

“Significant upgrade over the stock tubes in my Rogue Audio ST100.”

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Posted 8 years ago

“Oh I have all the best NOS tubes and this particular tube is the very best of the best. Most rollers will experience the old "Like I never heard my stereo before". It unveils even the most masked music. I will say the tubes from Upscale are of a quality unequaled anywhere. I will let you all know the price for a tube is no object to me and I will be paying large to keep this tube in my preamp. Best NOS 12ax7 anywhere, Tube Guru Rules.”

2 Helpful Report

Posted 8 years ago