“The strength of this tube is its overall balance. Its got the 5751 sense of focus in spades, is clean, open and evenhanded in frequency response if just a little sweet on top.” Read
“Very sweet, warm vocals. Very open soundstage. With classical, you really feel the vibration of the violin strings. It is very warm and very nice. It really gives a distance sensation.” Read
“The most liquid of all the tubes, It lets the highs just roll off.” Read
“This has to be the most detailed sound I’ve ever gotten out of the ‘head.” Read
Continue reading
“… I don’t like the clean sound, too much bottom. The rhythm is a lot better, the mid’s a little mushy but not hollow at all…. ” Read
“Tunsgrams are ok, they are most certainly better than any of the new production stuff” Read
Continue reading
From one of the stores that sells this tube – “The ECC83S is great tube with a tight low end, a very natural and harmonically complex mid with VERY good definition and a sweet high end that is not brittle.” Read
“6681 was “mobile rated”, otherwise specs were per 12AX7. Mobile rated meant not only rugged and hardy in the face of repeated on-off cycles, just as stated, but also capable of performing under extreme fluctuations of filament voltage as supplied by Jeep or halftrack battery, etc. under field conditions, I believe the spec called for reliable operation w/in range exceeding 5V to 7.6V on the heater! ” Read
” big, upfront, punchy, with lots of bass.”
This tube has been specifically designed for Audio applications and has very low noise and microphonics.
“i put in this rca 7025, gave it a couple minutes to warm up, put in some brushfire fairytales and i was like, “damn.” i was pretty much floored at the improvement. ” Read
“Sweet, liquid, musical and responsive. Very dynamic and real sounding.”
“They are beautiful sounding tubes, extremely well balanced from top to bottom, very warm and detailed with a lot of air.”
” It is a great sounding tube, with wonderful air and detail. ”
