The AMP4300 operates at 70V or 100V, and has been designed to fit any installation Power output: 4 x 300 W at 100 V Class D technology: optimum energy efficiency and low heat emission Installer settings on rear panel: volume control and HPF 80 Hz high-pass filter (switchable Flat/HPF per channel) Automatic standby mode after 15 minutes without signal Active cooling with thermostatically-controlled fan for continuously controlled temperature Euroblock connection: secure inputs and outputs for fast, reliable installation Front panel indicators: Signal, -20 dB, Clip, Protect Integrated protections: short-circuit, open circuit, thermal, limiter, HF and RF Technical specifications Output impedance: 33 Ohms @ 100 V Input sensitivity: 0 dBV / 20 kΩ balanced Frequency response: 20 Hz – 20 kHz THD+N: < 0.05 % Damping factor: > 500 @ 1 kHz Power supply: PFC switching, AC 90-264 V, 50/60 Hz Controls: front ON/OFF switch, rear volume and HPF Dimensions: 483 x 88 x 425 mm (2U, 19" format) Weight: 6.7 kg LINK FOR FULL INFORMATION: AMP4300