Original poster: "Jan Wagner by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jwagner-at-cc.hut.fi> Hi, there was a schematic using a 811A tube to drive a VTTC, on some website which I can't remember or find. Anyway, is a single 811A tube any good for a table top VTTC? Just asking because it is so cheap, about $25 per piece from www.elfa.se ... But those ~250W seem very little? - Jan