I have put up a schematic which I have successfully used to connect to/from an XLR based system (Yamaha MC1204 mixing desk) http://lamp.man.deakin.edu.au/junk/trs2xlr.gif [attachmentid=59] Please note that this assumes standard XLR pin 2 high. Older (especially USA) equipment may have pin 3 high! Failure to use correct wiring will probably blow the expensive bit plugged into the XLR! Cheers Goaty