This is a fantastic tube amp that can run as stereo (100+ w) or mono (200+ w). I have 2 and run them mono but will sell individually. The power tubes are a 6 months old and sourced from VAC. The input tubes are NOS Philips that sound sublime. I am the original owner and these are in very good condition with no visible scratches, nicks, or dents. They are about 6 years old now and I am downsizing my system. Original boxes and documentation.