I just won an eBay auction for a Supro 16T...I've been wanting to check out the Supro/Valco/National/etc. amps for a while, and this seemed like as good a time as any to take the plunge. According to the seller, it's mostly new tubes -- an EH 6v6 & a pair of Groove Tubes 12ax7s. Does anyone know if the amp is cathode or fixed bias? I thought I'd read someplace that it was cathode biased when I was researching the sale, but I don't for the life of me remember where. And, it's possible I was reading about a different amp, as I was looking at several. The only thing I'm sure of is that, if it sounds as cool as I hope, the first thing I'll do is get a 3 prong cord. My hair's curly & unruly enough as it is, thank you.