Zen Variations 1

This is my second version of zen-ligh amp. I corrected some errors (heat sink mounting...) and added little 12at7 preamp with input select switch. In order to drive zen with tube I added buffer zvp3310 like on zen variations-part 4.RI=47k,RF=220k. Thanks again for this wonderful idea. My other amp is playing at my home for almost a year with no problems. Thanks, Mario .(JavaScript must be enabled to view this email address)