I have for sale a very nice Cayin TA-30 EL34 tube integrated amp with Bizzy Bee mods which include focus control, Subwoofer output and external tube biasing. Also have the manual and original box. This is a great tube amp thats worked perfectly from day 1. Email for pics. Meicheng101@sbcglobal.net Willing to ship but would love local pickup in San Francisco Bay Area so I don't have to. 30 watts a channel and also runs in triode with just 2 power tubes biased at higher level, about 10 watts/channel. Both ways sound great. Dead quiet, no transformer or tube hum whatsoever. 3 inputs and volume control. I would rate this an 8 on the Audiogon condition scale. A very nice amp for the money. $550+shipping. Meicheng101@sbcglobal.net