I have an Adcom GFA 555 Power Amplifier that boasts over 200 watts per channel, and can be bridged at the flip of a switch to provide over 400 watts in mono. It is a high current design and a monster subwoofer amp, deep and very tight. It's also a good full-range mid-fi amp with extended highs and an open mid-range. It is in perfect working order and excellent cosmetic condition, with a clean faceplate and chassis. The only blemish is that the outer heat-sink fin on one side is bent in a little. The amp is current in it's original factory carton in a temperature controlled environment in Palm Desert, CA Zip 92211. The 555 is a classic, and a bargain at $299. You can reach me at ericjerde@gmail.com and (310)935-8624.
