Martin Logan Spires, Bel Canto 1.5 Dac ( also used as preamp ), Bryston BDP-1 digital player as main source, McIntosh MC302 power amplifier, and Velodyne DEQ15 subwoofer ( no longer using as bass response in my room with Spires no longer need subwoofer ) btw room size is 10ft x 20 ft