I did read somewhere about the Amperex being a re-branded GE or Sylvania but I am by no means an authority on the subject. As Atmashere said all the vintage 6CG7 tubes are good.
I just like the sound of this tube. It's basically a miniature 6SN7. If your going to keep your preamp it is worth getting some tubes to try.
Just a note. If you are able to change the heater voltage from 6.3 to 8 volts. You can use the 8cg7. They are the same tube with a different heater voltage and you can get them cheap.
I just like the sound of this tube. It's basically a miniature 6SN7. If your going to keep your preamp it is worth getting some tubes to try.
Just a note. If you are able to change the heater voltage from 6.3 to 8 volts. You can use the 8cg7. They are the same tube with a different heater voltage and you can get them cheap.