Imagine a single ended audio source, such as something from a MP3 player where you get reference,left and right. I'm using a TPA2008D stereo amp, and the app notes show using a differential input. Can i just tie the 'N' inputs to ground or do I need to convert from single to differential before driving into it? --------------------------------- Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist