ProtoDAC TDA1387 X8 project

[michaelagiles]

So I'm new to the CamillaDSP and other signal processing part of moode, does it effect all playback? will the polarity inversion effect Airplay and Spotify also? I just want to make sure the polarity is correct, but honestly I'm not really sure if my system has anything else inverting.

Is there a good way to test this at the speakers?

Polarity inversion will affect all playback. Polarity inversion can also be done in MPD.

Most equipment does not invert polarity. If it does, it should be stated in the manual.

The only way to know is to display the input and output on an oscilloscope. Or the input could be mixed with the output in a mixer. If the output of a stage is inverting, the sum of the input and output will be zero (complete cancellation if the amplitudes are the same).

When the polarity is correct, the sound quality is better in comparison to inverted.

My experience is that the "inverted" setting is generally for SQ. However there seem to be certain recordings that benefit from "normal" polarity! I think(assume?) that it is a matter of either lack of care or ignorance or some post processing that ended up "inverting" the polarity on the recording. It often presents as the record "just not sounding right". Often, the difference is subtle but sometimes it makes an unlistenable record bearable.
Or maybe its all in my head! But thats where the listening happens anyway.
Enjoy the music!
MG