i have an ampliphier that is about 25 years old. i was lookin through the owners manual to see how much wattage it could pump out because i thought that older ampliphiers couldn't pump out as much sound as the new ones. but the manual said that it pumped out 15 watts per channel. i called up Pioneer (the make of the ampliphier) and they said that was by the old standards of measuring wattage. he said that it would be a bigger number for these days because back then, ampliphiers didn't have processors and they just pumped out raw power. now, does anybody know how to convert older standards of wattage to the knew standards so that i can know how much power is really being pumped out?