Hi everybody, Tony wrote :OB-X (8 voices, curtis based voice boards). Aren't only the CEM 3310 envelopes present in the OBX voice boards? (OBX, the grey paneled one) May be I am wrong but it was the OBXa the first to have CEM VCO-VCF-VCA-EG chips on the voice boards. Isn't it? ciao riccardo