Quote:

The Stereo piano patches contain frequency shifts that sound great when reproduced through a true stereo system where those shifts are mixed "in the air" - BUT when attempting to sum those two channels to mono electrically, it introduces phase cancellations. Typically that will make for a sound we might describe as "THIN" and weak.



Thanks Mac, your explanation fits the facts exactly.

One final question - why does this not happen when I sum the stereo channels from the computer or the synth?

Tony