Best sound config with sonos/ Touch and wyred dac1


I have a logitech touch and sonos connected (via coax) to a modified wyred dac1, then going straight (rca out) into an integrated amp without headphone out.

What is the best set up for headphone listening? I'd like to connect to both sonos and touch but not use their dac, reuse as much as possible my stereo components, and budget limited to $1k (but ideally less than $500).