Power amplifier 4-channel 300W/ch 70/100V Class-D 2U - AUDIOPHONY PA AMP4300

The AMP4300 is a 300 W/CH, 4-channel power amplifier for 70/100 V lines, designed for medium to large-scale distributed sound systems. It is the ideal solution for all multi-zone installations requiring power, reliability and independent level management in each area. Class-D technology ensures stable power delivery with a low thermal footprint, maintaining distortion below 0.05% and a signal-to-noise ratio above 100 dB. Thermally controlled ventilation ensures quiet operation and long life even under prolonged load conditions. An intelligent standby system automatically reduces power consumption in the absence of a signal, helping to keep operating costs low without compromising responsiveness: the amplifier immediately returns to full power as soon as an incoming audio signal is detected. The configuration is designed for installers: each channel has a volume control and a selectable high-pass filter (flat / 80 Hz), accessible only from the rear panel. Euroblock terminals simplify wiring, while dedicated front LEDs for each channel (signal, -20 dB, clip, protect) provide immediate visual control of system status. All this is integrated into a robust, compact, and lightweight 2U chassis, weighing just 6.7 kg. User benefits High energy efficiency and low heat generation Audio quality with very low distortion and a high signal-to-noise ratio Reduced long-term power consumption thanks to automatic standby mode Installer-only configuration: controls are accessible only from the rear panel Areas of use Shopping centers Sports complexes Public buildings

Technical characteristics

• Power output: 4 x 300 W at 100 V
• Class-D technology
• Output impedance: 33 ohms @ 100 V
• Input sensitivity: 0 dBV / 20 kohm balanced
• Frequency response: 20 Hz – 20 kHz
• THD+N: < 0.05 %
• Damping factor: > 500 @ 1 kHz
• Power supply: PFC switching, 90 - 264 V_AC 50/60 Hz
• Controls: front ON/OFF switch, rear volume and HPF
• Automatic standby mode after 15 minutes without signal
• Integrated protections: short-circuit, open circuit, thermal, limiter, HF and RF
• Dimensions: 48.3 x 8.8 x 42.5 cm (2U, 19″ format)
• Weight: 6.7 kg