HCP4 Specifications: 760W 4-channel Amplifier Output Power (RMS) @ 14.4 VDC, THD 1%: 4 Ch: 55 W x 4 (4 Ω) 4 Ch: 85 W x 4 (2 Ω) 3 Ch: 55 W x 2 (4 Ω) 170 W x 1 (4 Ω) 3 Ch: 85 W x 2 (2 Ω) 170 W x 1 (4 Ω) 2 Ch: 170 W x 2 (4 Ω) Output Power (RMS) @ 14.4 VDC, THD 10%: 4 Ch: 65 W x 4 (4 Ω) 4 Ch: 95 W x 4 (2 Ω) 3 Ch: 65 W x 2 (4 Ω) 190 W x 1 (4 Ω) 3 Ch: 95 W x 2 (2 Ω) 190 W x 1 (4 Ω) 2 Ch: 190 W x 2 (4 Ω) Power supply voltage: 11÷15 VDC . 2 x 20A Idling current when off: 1A/0.04 mA Consumption @ 2Ω, 14.4 VDC (Max Musical Power): 21 A Remote In: 7 ÷ 15 VDC – 1 mA ART: Automatic Remote Turn-On/Off with Speaker-In Amplifier stage Distorsion – THD (100 Hz @ 4Ω): 0.01 % Bandwidth (-3 dB): 10 ÷ 45 kHz S/N Ratio (A weighted @ 1 V): 103 dB Damping factor (100 Hz @ 4Ω): 120 Pre-In sensitivity: 0.6 ÷ 5 V RMS Speaker-In sensitivity: 1.5 ÷ 12 V RMS Load impedance (MIN) @ 4 Ch: 2 Ω / @ 3 Ch: 2 Ω 2 Ω 4 Ω / @ 2 Ch: 4 Ω INPUTS: PRE IN / SPEAKER IN Pre out FULL range (FRONT): Yes FRONT Ch. filters FULL: Yes Hi-Pass: 80 Hz @ 12 dB/Oct. Lo-Pass: 50 ÷ 500 Hz @ 12 dB/Oct. REAR Ch. filters FULL: Yes Hi-Pass: 80 Hz @ 12 dB/Oct. Lo-Pass: 50 ÷ 500 Hz @ 12 dB/Oct. FRONT Ch. MONO (on/off): Yes REAR Ch. MONO (on/off): Yes BOOST 50 Hz (select): (0 / 6 / 12) dB DCX-130.3 Specifications: 2-way 13cm coaxial speakers 40W RMS power handling (80W peak) High Density flux ferrite magnet Water repellent pressed paper cone woofer Neodymium magnet Mylar dome tweeter Frequency response: 60-21kHz Impendence: 4-ohms Sensitivity: 91 dB/Spl Outer diameter: 130mm Mounting hole diameter: 119mm Mounting depth: 52mm DSK-165.3 Specifications: 2-way 16.5cm component speakers 6.5″ woofer, 25mm (1″) Tweeter 80W RMS power handling (160W peak) Frequency response: 50-23kHz Impendence: 4-ohms Sensitivity: 93 dB/Spl Outer diameter: 166mm Mounting hole diameter: 142mm Mounting depth: 68mm Crossover included: 3.5kHz crossover frequency, 6/12dB Oct