ucmgr
Head-Fier
I loved my WA-6SE and I used it with HD800's and HD650's. I think the WA-6SE is the sweet spot in the Woo line. The Wa-6 not quite as good but still has a lot of the "sound character" of their bigger brother. There's soooo much you can do to alter its' sound by tube rolling and the nice thing is that the tubes aren't really all that expensive. Sure, a rectifier like a Sophia Electric is expensive but not nearly as expensive as other rectifiers. They also last a long long time unless you leave your amp on 24 hours a day. Theres so much information on tube rolling for many different amps but those for Woo Audio amps are plentiful regardless of which amp you are considering. Head-Fi ers are eager to share their experience, good and bad, so one can benefit for all the members who are kind enough to share the wealth of experience of owning a particular amp or pair of headphones. If you get to the point where you want to move up the Woo line, their amps are very easy to sell. Just look how few used ones of any model are for sale right now.