This is a push-pull tube amp with Svetlana tubes. See
http://www.angelfire.com/biz/bizzyb/TAD-60.htmlPurchased in fall 2005 from the manufacturer and has been kept in a nonsmoking home. New tubes were ordered in fall 2007 from the manufacturer and they work fine.
The sound is open and dynamic, especially in class A. It handily beat my Sim Audio integrated which had cost a fair bit more.
Yours for $495 + shipping from NJ. (It is quite heavy but I have the original boxes.) Will remove tubes from the case to protect them from damage in shipping.
Photos are here:
http://sites.google.com/site/tadtubegearforsale/ See also my ad for the matching TAD-150 preamp; will take off $50 if you purchase both.
Note that the TAD-60 can be used as an integrated amp; it has a volume control. But the TAD-150 preamp takes up the sound to another level. But the TAD-60 alone bested my Sim Audio integrated.