Hi all, Maybe this is an old one,but I've found this interesting page http://diefi.die.unifi.it/~maurri/synth.html Italian diy synth from S. Maurri,huge,lots of schematics, paia vcos,ssm vcf and envelopes,moog style vcf,pin matrix, digital kbd,interesting s&h and ring modulator with LS025 (?)... Downside:all text in italian check it out marjan