I bought this Threshold Amplifier S/160 in 1994 from Stereo Exchange in New York City (they are still in business in New York City). This stereo, unbalanced, amplifier is rated at 80 watts/ch and will play speakers rated at 4 ohms. I originally had Magnepans and could not find any amplifier that could handle such low ohms until I bought this Threshold. The sound was amazing for the Magnepans and continues to play that "tubey" sound. It will play Class A up to 10 watts - not much but has plenty of power in reserve too. I have not really used it for a couple of years and thought that it would be a great first amplifier for a newbie or someone that has always wanted a Threshold amplifier. Well, here's your chance. I will start the auction at $500 and shipping is free to anyone in the continental US. Only a power cord is included.