My ranking in SQ
1. Bifrost, perfect dac imo. It doesnt add, doesn't subtract. Its not sibilant, its not anything bad.
2. NFB-2 - Basically the bifrost, but warmer cutting off some higher registers.
3. Compass 2 - In the sabre config it is slightly sibilant. Pairs well with my LCD-2 but has trouble with my less warm headphones.
But the Compass 2 still sounds good, and has utility, Its a damn powerful headphone amp, has a robust USB input and...