Great amps. I regret selling them from time to time. It drove Avalon Diamonds and Quad ESL well. I did not have maintenance problem and they sounded great with Shuguang 845B and 845M. Very good texture and a lot of inner detail. It bettered Audio Research and Rogue amps that I had. I did not think they give up much comparing to Nagra VPA. I tried many tubes and ended up with Ei EL34 and Bugleboy 12AU7.
