[IDEA] Polarity Flip

[moodenigo]

There is no balance setting in MPD but ALSA maintains individual channel volumes. You would have to use amixer or alsamixer to change the volume of an individual channel.

That approach makes sense but whats the usage scenario for a Balance control these days?

The first use case that comes to mind is recordings that have a channel unbalance. Differences of about 3db are not that uncommon. 

Second use case: Sometimes rooms have some asymmetries that cannot be completely corrected by acoustic treatment, and a bit of balance control of course is not perfect (the effect should be different for each frequency range) but can help immensely.

These are the main reasons some preamps have balance controls, but in this era of high output DACs and high input impedance buffered power amps many of us are eschewing preamps.

 Roberto
 Roberto