As many have put it before: watts are watts.
True but tube amps usually have stout power supplies, and big caps that get full power even with both channels driven. There are few lower power SS amps with big caps and excess power available to the power the output transistors.
True but tube amps usually have stout power supplies, and big caps that get full power even with both channels driven. There are few lower power SS amps with big caps and excess power available to the power the output transistors.