125W PER CHANNEL; FREQ RESP: 20 HZÐ20 KHZ; EACH ZONE HAS 60W, 12-STEP, TRANSFORMER-BASED STEREO VOLUME CONTROL; VOLUME CONTROL ATTENUATION: 42 DB MAX; FEATURES DIRECT CONNECT REMOVABLE SCREW DOWN TERMINALS; SUCTION FEET ASSURE SELECTOR WILL NOT MOVE WHEN ROOM SELECTOR BUTTONS ARE PUSHED; REAR PROTECTION SWITCH ASSURES SAFE OPERATION; DIM: 1.75"H X 17"W X 6.125" D; SUPPORTS UP TO 6 PAIRS OF SPEAKERS