Rolf wrote: >> Erm, just in a very low voice whispering: an 5.1 sound card has 6x16bit >> input, right? > I don't believe so. I believe it has just the 2 inputs (stereo mic). And line in, sometimes, but they may or may not be separate ADCs. Anyway, the inputs are AC coupled. For most things you'd have to change that and probably add some kind of input buffer. Maybe possible in a standard PC, but not the thing you want to do to a notebook. Probably. Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist