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My 6C33C amplifiers were otherwise known as "MA240"

Posted by Lew on December 13, 2023 at 12:01:51:
Ralph discontinued that particular model in the late 90s shortly after I bought my pair, in kit form from the factory. The MA240 used six 6C33Cs per monoblock, and it was essentially a 6C33C-based version of the MA2, used the same power transformers and chassis's. I have since converted them to use 7241s, but only four per monoblock. With Ralph's tutelage, I built the amps so that each output tube can be individually biased. Thus I needed to incorporate a separate dual triode driver tube for each pair of output tubes. I have updated and upgraded the amps several times in the past 25 years, but I cannot imagine being without them to drive full range ESLs.