The tpa6120 could handle balanced inputs (not used with M8 it is running on single ended-inputs).
But definitely (mine with tpa6120) does not provide balanced output.
Don't know how single ended outputs should be converted to balanced outputs by placing 4 resitors and 4 capacitors on a separated board;
4-pin XLR has common ground (2R on Pin 2 +4) what could never be with bal. outputs.
L+ and R+ from SE are directly (7R) connected to L+ R+ on the "balanced" side.
helpless + perplexed regards Martin
Edited by pink panther - 6/15/14 at 3:42am