I took a flyer on this UREI 6500 power amp. The specs and manual are here. It weighs 90 pounds, and is rated at 275 watts/channel into 8 ohms, 400 into 4 and 600 into 2 ohms (or it can be bridged for 900 watts into 8 ohms in mono)!
It worked perfectly yesterday, but a freak preamp noise seems to have taken out a side temporarily...I'll let you know. Based on about a half hour of listening, it's beautiful and big sounding with insane headroom. People with speakers that require industrial strength solid state amps like Krell, Mark Levinson, Rowland, Threshold, Bryston etc. may be very interested in this baby.
Each channel uses 14 output transistors!