Another one for skeptic or anyone else. Amps, watts & volts ???

[spacedeckman]

Volume control adjusts output voltage (imagine a steady state AC signal), impedance changes in moving speaker drivers change current draw, the amplifiers job is to maintain output voltage into the load as it changes. Now, if the impedance of the speaker drops in half, say 4 ohms from 8 ohms, the current demand will double for however long the speaker stays in the 4 ohm area. The amplifier will attempt to fill the need for additional current and maintain voltage, if it can't, the voltage will drop and become a power shortfall. Amplifiers that are good to excellent at dealing with this are often labeled as "high current" amplifiers.

Generalizing (and opening myself up for taking some shrapnel) here, but higher current amplifiers tend to have better bass response (tighter, better definition) and generally sound a lot more powerful than they really are. This happens because the amplifier is actually able to deal effectively with the demands of the speaker load. Better sound should be the goal, but advertising tarnishes that idea a bit.

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