#1
i dont know how many watts my amp is
the back of my other (15 watt) amp says like 60 watts on the back
the back of my main amp says

120 V ~ 60 Hz
450 WATTS

it a moderatly big Fender combo amp (1988 Stage 185)
#2
a Fender Stage 185 is about 150 watts output. 33% efficiency from taking input power and outputting it to the speakers. 33% is standard efficiency for solid state amps.
Gear:
Modded Steinberger Spirit (white) (SD-AH/EMG Select)
Modded Steinberger GP-2R (white) (EMG81/60)
Peavey XXL head
Hughes and Kettner Cream Machine
Hughes and Kettner Blues Master
#4
Quote by CephalidHunter
a Fender Stage 185 is about 150 watts output. 33% efficiency from taking input power and outputting it to the speakers. 33% is standard efficiency for solid state amps.


+1


The number you see on the back of your amp is how many watts the amp needs to actually operate.