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MA-1 tubes

Does anyone know the tube compliment for the original MA-1 (12 6AS7s) with the fourth 9 pin tube (CCS) added. I know the driver tube didn't change it's still a 6CG7/6FQ7. The problem I'm having with these amp is that they came in with Chinese tubes but with no markings. I don't know if they are testing as worn out 12AT7s or just OK 12AU7s.

Craig


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Topic - MA-1 tubes - llwhtt 12:53:26 01/22/12 (2)

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