FACT | Watch a sneak preview of Teenage Engineering's OP-Z video synth from NAMM 2017 FACT Teenage Engineering had two forthcoming products to show off at NAMM 2017: its tiny PO-32 Tonic drum machine and the OP-Z, a “video synth” that generates visuals as well as sound. The OP-Z was on display at NAMM 2016 in prototype form, but this year ... |