Ruby Tubes 12AT7C

Tube

  • An entirely new 12AT7

Further information

Preamp Tube Yes
Power Amplifier No
Matched No
Number Of Tubes 1
6 customer ratings:
  • 5
  • 4
  • 3
  • 2
  • 1
5 / 5.0
  • quality
5 written ratings Read all reviews
Total
quality

Phase inverter

Gain_Badger, 31.03.2016
The phase inverter is a hard worked tube. Perceived wisdom states the most important tube in a pre-amp stage is V1, the first valve the signal sees. well, to an extent yes, but the P.I is the tube that gets the work out. It may be worth changing yours out if you find you're amp is getting a little quiet, or your hearing is picking up some odd swirl artefacts. If your amp has gone silent on all channels, yet appears otherwise normal, check the P.I
The P.I also has some bearing on sound. The higher the transconductance, the faster the valve can slew voltage. A 12ax7 is usually O.K in the P.I position. Fender specify a 12at7 for some amps, and for these amps, the Ruby is as good as any I've tried.
My amp had become a lifeless thing. It is once again a lively bundle of loud and furious joy.
ps.12at7 make rubbish pre-amp tubes. They are P.I and reverb tank drivers first and foremost.
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Total
quality

Great pre amp tube

03.01.2017
Very nice tube,
breaks up just right to give a very gainey overdrive,
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17,90 €
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