Before anybody jumps on me, I looked at the thread titles in the stickie and I tried reading the Amps FAQ by Joris but the related section was full of non-displaying text characters and techno speak that made my head spin. I don't want to use a lot of electricity when I practice alone. I've employed round numbers to keep my question easy-to-understand and discuss: SIMPLE QUESTION 1 - Assume I buy a 100 watt amp. - Assume I set the volume knob to 1 (max setting of 10). - Next, assume I set the volume knob to 10 (max setting of 10) Does the '10' volume setting use 10 times as much electricity a the '1' volume setting? SIMPLE QUESTION 2 - Assume I replace the 100 watt amp with a 500 watt amp. Does a volume setting of '1' on the 500 watt amp use 5 times the electricity that's used by the 100 watt amp at the same setting of '1'?