Vintage SAE 2200 power amplifier. Unit has been converted to stereo/mono operation. Stereo power out is 100 watts RMS per channel at 8 ohms and 325 watts RMS at 8 ohms in mono mode. Amplifier is in excellent cosmetic and operational condition. I have been servicing SAE equipment for 50 years and this is one of my rare units. Great for use with a passive subwoofer. Contact seller with any questions before buying.