IME, it was problematic to roll the 6AS7 output tubes in my M-60.
I have always been a fan of NOS,
I got a set of 6AS7Gs from Brent Jesse.
They we’re not matched and were three different brands as Brent said.
As Ralph said, the failure rate of NOS is high compared to the stock Russian. 3 of the 16 failed. However, when I got good ones in, the power output went up about 20% and the tone was much better.
I would highly recommend going with NOS as long as you are aware of the failure rate,
I have always been a fan of NOS,
I got a set of 6AS7Gs from Brent Jesse.
They we’re not matched and were three different brands as Brent said.
As Ralph said, the failure rate of NOS is high compared to the stock Russian. 3 of the 16 failed. However, when I got good ones in, the power output went up about 20% and the tone was much better.
I would highly recommend going with NOS as long as you are aware of the failure rate,