Edu, >> CAREFULL!!!!! >> The schematic HAS A MISTAKE!!!!! >Is that the same supercontroller that´s in the book "Build a better >music synthesizer?" Does it have the same mistake? I have the book, but >I didn´t build this, as I couldn´t find the 76477. ok I confess I misread the subject line.. the SUPERSEQ has the error... Paul (DOH)