I picked this up to try more power with my H4s. However, I decided to get a 300B amp. The amp is as new and unmolested. (No upgrades) I ran it with EL34s biased, per Cary, at 50 ma. $2500, or the best reasonable offer plus shipping in the original Cary Double box. Pay Pal is fine. Feel free to PM me if you have any questions, or would like to speak on the phone. I misplaced the bias jack and assembled a new one. It's simply bell wire with a 1/4' jack with leads. The original EH tubes and a quad of EL34s are included.