Why Twin Wattages Different?

[tbryanh]

What makes these 3 amps have different output powers?

I am assuming the aa270 has about 80 watts of output power like the blackface twin does, but I am not sure if this is correct.

The second one has 100W of output power, and the third one has 135W of output power.

http://www.ampwares.com/schematics/t...a270_schem.pdf
http://www.ampwares.com/schematics/1...F_Twin_Rev.pdf
http://www.ampwares.com/schematics/t..._135_schem.pdf

[Enzo]

Design.

Output power ultimately comes from the power supply of any amp. The three amps you reference have B+ voltages of 410v, 445v, and 500v. That right there would be the large part of it.