Class A power section with an oversized output transformer and a 6V6 power tube outputs 8 Watts.

Class A power section with an oversized output transformer and a 6L6 power tube outputs 12 watts.

Class A power section with an oversized output transformer and a 6550 power tube outputs 20 watts. The 6550 isn't a common power tube for tweed-style amps but we love it in this circuitry, with its glassier, harder sound giving this amp a kind of tweed meets blackface vibe.