No affiliation with the seller, but there's a Coda 15.5 on Audiogon right now. That amp--if you are seeking serious clarity, a just-right touch of warmth, and the ability to drive lower-impedance loads with ease--is tough to beat, IMO. If I didn't already have their S12.5 and pretty easy-to-drive speakers, I'd be all over it.
Coda makes tremendous stuff, IMHO, and it's priced very fairly for the sonics on tap.