APOGEE QUARTET Affordable electronic drums that groove We had anticipated Apogee would deliver its pristine digital conversion and fidelity to the Quartet, but its massive range of studio control totally blew us away. Like the One and the Duo, all of the Quartet’s I/O levels are controlled via sleek pushbuttons and a single big knob. What sets the Quartet apart are its four phantom-powered combi-jacks, ADAT I/O and three independent balanced outputs....