In Reply to: Atma-sphere M60 and P2 tubes posted by Mike Ro on December 11, 2015 at 18:59:58:
Those GE 6AS7GAs are not known for reliability!
We recommend the Chinese 12AT7 is it is easier to find low noise/lo microphonics with them. If you are running a high output cartridge its probably no worries.
There are a number of updates available for the P2 with significant performance increases!
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Topic - Atma-sphere M60 and P2 tubes - Mike Ro 18:59:58 12/11/15 (6)