4-channel

Guys and Gals, I have a pair of Linkwitz LXmini speakers. Existing system is BlueOS2i streamer (RCA out) to miniDSP4x2 required for LXmini (RCA out) to ATI multi-ch amp (speaker wire) to LXmini's. I've gathered that SQ could be improved by upgrading DAC (miniDSP DAC is lacking). I'm thinking...