Bozak is often remembered today for his advanced designs of DJ mixers which allowed the development of the concept of disc jockey mixing and 'discotheques'. Beginning with the Bozak CMA-6-1 and CMA-10-1, 6 and 10-input monaural units of the mid 1960s, the peak of development was reached with the stereo Bozak CMA-10-2DL; a unit that was very quickly accepted as the standard of its day. The Bozak CMA mixers were very expensive: they used high-grade Allen-Bradley components, hand-selected transistors, and were of modular construction for ease of servicing and expansion.