Design Features stereo design for mix & mastering as well as voices & instruments highly musical design intuitive, user-friendly, self-explaining layout lowest noise and distortion signal paths built with highest quality components audio switching on EQ gain potentiometer zero position for bypassing unused stages no microprocessor, no clock pulses, sequential logic only individual power stabilization on each module, no switched power circuitry fully compatible with API 500 module series specs, occupying two slot