Purchased new by me in January of this year is a Carver Crimson 275 tube amp in perfect condition. Uses 4 KT120 power tubes for about 75 watts/channel. I am trying to downsize as I have too much equipment. Lots of reviews and information on the web if you do a search. One of the things I appreciated about this amp (aside from its excellent sound) was it weight, only about 24 pounds which is quite light for a tube power amp. Attributed to the custom wound transformers. No buzz or hum. A really nice tube power amp which can mate with either a tube or solid-state preamp.