Pass Labs

I have listened to First-Watt J2 and SIT-2 in comparison on my system with fairly-efficient speakers (Living-Voice OBX-RW 6-ohms 93-db) and both are very good sounding amps.  The SIT-2 IMHO is the best sounding solid-state amp I've ever heard on my system.  The J2 is very good, but the SIT-2 is more articulate, and the music is more realistic.  As "you're there" with female vocals !  If you have efficient speakers (I'd say a true 93-db and up) and want some of the best sound, I'd go with  SIT-2, with the J2 right behind it.  I have two SIT-2's bi-amping my Living-Voice OBX-RW's and the sound is terrific.  Nelson Pass has done a terrific job with his First-Watt products and is constantly in design/testing mode improving on this line constantly.  If you want to buy, check out Reno Hi-Fi.  They're where I bought my First-Watt amps and great to work with.  Also, 6-Moons has done some articles on both of these and other First-Watt amps...