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In Reply to: RE: Diff btw Tele and Tung Sol 12AX7 NOS? posted by Mendel on June 23, 2014 at 07:29:39
Mendel,
Thanks for the reply! Tried some 12AX7 Tele SP in my integrated amp and they sounded terrible, one dimensional, flat and almost like I was listening in mono. I have a 1956 TS square getter that I borrowed from a friend and will pop it in tonight and let it settle over the next 50 hours before doing any serious listening.
I will be comparing them to my Psvane 12AX7 TII that have over 170 hours and are fully broken-in, more to follow...
Follow Ups:
Did you test those Telefunken ECC83's? Seems that many being sold on the market, today, are near 50% or less emissions. And sound lifeless and dull.
Square or D-getter US made 12AX7 are pretty good tubes. Whether made by Sylvania, Raytheon, Tungsol, GE, RCA... whomever. May have been a lot of cross-labeling between the manufacturers, in those days. Black plates, even better tubes. Hard to find good testing, quiet one of any of these manufacturers.
FenderLover,
The Tele SP were tested and matched by a good dealer but sounded lifeless in my Vac. The Tele SP 12AU7(4) were awesome and extended the soundstage width/depth with pin-point imaging.
So far, I haven't found any tube in position V01/02 that beat the stock Shuguang 12AX7 which gives that big sound and bloom that give wood instruments that realistic feeling of being in the room. I'd be interested in any NOS or reissue tubes that have the same sound signature of the stock Shuguang. The Teles and Psvane 12AX7s sounded better but didn't have the image size and density of the Shuguang.
Like to hear your experiences.
Thanks,
Mendel,
Your observation of the Tung Sol bent square getters are spot on! Guitars, Cello's and Violins sounds alive, vibrant with beautiful tone:)
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