hickamore
++1 for Aric Audio, and funny I just asked Aric about XLR inputs for a friend that is going to buy one of his amps.
Aric makes 2 300B amps, a 2A3 amp, a Transcend EL34 "Push Pull" (What I own) a EL34/KT88/120/150 single ended, and Super KT EL34/KT88/KT120/KT150 monoblocks. All of them come standard with RCA single ended, but can be upgraded to XLR for a $300 upgrade.
All of Aric's stuff is hand wired, can be customized, and uses ridiculously high quality components. Give him a call, he's a great guy to talk to, and makes amazing equipment. I also own his Motherlode XL preamp, and will be buying one of his 300B amps in the fall