To change the SoX settings, you go back to disabled, save and MPD will restart.
My system consists of the Boss (actually just in the last week I stepped up to the SMSL Sanskrit 10th MkII based on recommendations in the hardware forum - clearly better than the Boss, and sounds better without SoX based on limited listening time) directly driving two Icepower 500ASPs as monoblocks (250W each into the speakers; these have taken over for a pair of self home built tubes amp monoblocks 70W each - the Class D amps have much better bass and the tube amps much better treble, midrange similar) driving a pair of Harbeth Super HL5. The music I listen to is entirely acoustic, classical orchestral/choral or baroque ensembles. I very infrequently attend live concerts, and when I do I will spend the money for the best seats I can get, which are middle section, orchestra level row 5-15. So I think that stereo reproduction needs to fool the perception of a live orchestra. The new high quality, inexpensive DACs can do this to a large degree. That being said, I have never heard a stereo system at any price that can accurately reproduce the sound of a bass drum, 32' pipe or cymbal.
My system consists of the Boss (actually just in the last week I stepped up to the SMSL Sanskrit 10th MkII based on recommendations in the hardware forum - clearly better than the Boss, and sounds better without SoX based on limited listening time) directly driving two Icepower 500ASPs as monoblocks (250W each into the speakers; these have taken over for a pair of self home built tubes amp monoblocks 70W each - the Class D amps have much better bass and the tube amps much better treble, midrange similar) driving a pair of Harbeth Super HL5. The music I listen to is entirely acoustic, classical orchestral/choral or baroque ensembles. I very infrequently attend live concerts, and when I do I will spend the money for the best seats I can get, which are middle section, orchestra level row 5-15. So I think that stereo reproduction needs to fool the perception of a live orchestra. The new high quality, inexpensive DACs can do this to a large degree. That being said, I have never heard a stereo system at any price that can accurately reproduce the sound of a bass drum, 32' pipe or cymbal.