T-12 USb Audio Mixer Concept T-12 USb Audio Mixer Concept from Dan Hawbecker T-12 USb Audio Mixer Concept USB Audio mixer concept with LED backlit individual controls, push/click individual channel mute, and backlit level meters. gLike T-12 USb Audio Mixer Concept USB Audio mixer concept with LED backlit individual controls, push/click individual channel mute, and backlit level meters. Industrial Design Share R 7 n Dan Hawbecker Industrial Designer Kansas City, MO Follow Contact