Audio stores in Washington DC???

Deja Vu Audio, Mclean, Va for tubes and analog, Gifted Listener Audio (703) 818-8000, 5720 Pickwick Rd., Centreville, Va for Linn, Levinson, Ayre, and Thiel. Deja Vu has a website, but I'm not sure the address. Soundworks (301) 929-8600, 10526 Connecticut Ave, Kensington, Md, probably has the best overall selection but they're known to be a bit unpleasant to deal with. Good luck!

I would recommend Deja Vu audio. (www.dejavuaudio.com)
I've been there about a dozen times. Really nice owner who knows his stuff. Very analog and tube friendly.

I've been to Soundworks as well. They seemed OK but I've heard some strange things about them. I personally have never had a problem with them at all.

There's another shop in Bethesda. I'll get back to ya on the name of that one.

Finfinder,
I think you mean JSAudio, they're on St. Elmo ST. in Bethesda.