Purchased new in 2008 from Tom Vu Kelly Hi End Audio. 1 pair Single ended class A 60 w/channel monoblocks. Combines power and slam with tube charm. And class A power can drive low impedance speakers making these versatile real world amps.1 pair Custom SRA bases included at this price (once you hear what the bases do you wont remove them, will sell separately). Upgraded RCA inputs from stock. Comes with 3 Ge tubes and 1 rare RCA 211 (4 output tubes and 4 input tubes total). I have one pair rare United Electronics 211 NOS tubes not included for sale separately if you want to explore what the amps can do ($1800). Original wood crates. Add paypal.