85 x 4 4-Channel Trunk Mount Amplifier (120-1977) Specifications Faxback Doc. # 16924 10% THD Output Power @ 14.4 VDC 1 kHz (4 Channel Mode):...............................................85 W X 4 (Bridged Mode):............................................170 Watts X 2 Frequency Response:.................................20-20,000 Hz (+/- 3 dB) Input Impedance Low Input:......................................................10 kOhms High Input:.....................................................100 Ohms Input Sensitivity (for 10% THD Output Power) Low Input:........................................................250 mV Maximum Current Draw:..................................................50 A Dimensions:.........................2 5/8 X 10 13/16 X 16 3/16 Inches (HWD) (6.7 X 27.5 X 41.1 cm Net Weight:...............................................17.2 lbs (7.8 kg) Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.