Great amp at a get price. Long time Audiogon seller. I won't go into a lengthy description as you can read that from the other Spectrons for sale on this and other sites. Suffice to say that I have never had a problem with this amp and it is extremely clean. The amp was recommended to me by Simon Thatcher, formerly of Spectron, who was instrumental in the development of the amp before he died some four years ago. He told me that it was perfect for my Magnepan speakers...and so it was. The amp had its fuses upgraded by the original owner. I will pay shipping on this heavy piece (60 lb.) to expedite a sale and will double box it in the original carton.