This might keep you busy for a minute... http://www.audioasylum.com/audio/faq/joes-tubes.html#6DJ8I use 1970 era Matsushita 6922 (branded as National) in my Cary, they are very nice. I heard a slight difference from the stock Sovtek 6922, but it was not big diff.Rich
any advice on tube vendors,,I've been looking at some tesla's,,about 20.00 a tube from tube depot IIRC,I've bought from them before and they seem very reputable,,others??? Thanks