I had a cottage industry for a while building PA systems for rock bands - SWTP sold a 150 watt power amp kit that worked & sounded great - Can't remember what it was called, though. Is the D2 the 6800 system? I built the motherboard kit, but before I had a chance to build I/O my stuff disappeared in a move. By the time I got reimbursed the TI-59 had come out - A pgmable that I could take to work was irresistible. Been a long time since rock'n roll ... :) Jack -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist