I have an old Proton 520 integrated stereo amplifier which I bought used back in the 1980's. There was no manual but the back plate says it's 150W, and a Usenet search came up with this info: 20 continuous average W/ch 20-20000 Hz with no > 0.015 % THD into 8 ohms. Dynamic headroom 4.7 dB. Slew rate 18V/uS. High current stable into 2 ohms. 15 lbs , $200 orig MSRP. As a power source for either an SVS 20-39 or 16-46 sub would this amp beup to the task?