Mille power amplifiers are born to fully enhance the outstanding performance of the Mille speakers. The new ADC (ADVANCED D-CLASS TECHNOLOGY) ensures pure listening pleasure while keeping a compact size with unmatched power efficiency. The heat sink, engineered with double technology, extrusion and aluminium die-casting, enables the Mille Power amplifiers to work constantly at full power without ever overheating, further maximizing thermal efficiency. The ultra-versatile Hertzaudio car amplifier ML Power 5 (100 W x 4 + 550 W 2 Ω) provides the ability to drive a Mille system including the subwoofer. The HRC BM (Hertz Remote Control Bass Management), low frequencies level remote control, is optional. Features - ADC (ADVANCED D-CLASS TECHNOLOGY) ensures hi-end acoustic response with unmatched power efficiency. Thermally optimized double extruded heat sink featuring die-cast aluminium ergonomic terminals. 3. 100 W x 4 + 550 W x 1 (2Ω) RMS power boasting hi-end quality. Power Supply - Power supply voltage: 11÷15 VDC Idling current: 3 A Idling current when off: 0.04 mA Consumption @ 1Ω, 14.4 VDC (Max Musical Power): 50 A Amplifier Stage - Distorsion - THD (100 Hz @ 4Ω): 0.08 % Bandwidth (-3 dB): 5 ÷ 50 Hz S/N Ratio (A weighted @ 1 V): 100 dB Damping factor (100 Hz @ 4Ω): 80 Pre-In sensitivity: 0.2 ÷ 5 V RMS Pre-In impedance: 15 kΩ Speaker-In sensitivity: 0.8 ÷ 20 V RMS Speaker-In impedance: 470 Ω