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Pro-Ject Amp Box S Mono - Mono Power Amplifier The Pro-Ject Amp Box S Mono is an ultra-compact, high-efficiency mono power amplifier delivering exceptional audio performance with room-filling power and lifelike sound quality. Ideal for audiophiles, it features advanced technology in a micro-sized metal casing, perfect for bi- or tri-amplification setups. Key Features Ultra-compact, audiophile-grade mono power amplifier Advanced Bi-Phase PWM (Pulse Width Modulation) circuit with SMD components Drives speakers down to 2 ohms for enhanced performance Mono input with RCA loop-out for easy integration Gold-plated speaker sockets compatible with banana, spade, pin, or bare wire connectors Remote on/off trigger input and output for multi-unit setups Metal casing protects against vibration and interference Low standby power consumption Front-facing on/off switch with silver or black faceplate options Includes 45cm power-on trigger cable for trigger functionality Specifications Power Output 1 x 40W / 60W @ 8 / 4 ohms Drive Capability 2 ohms Frequency Response 5Hz - 20kHz (+0dB, -0.5dB) Signal-to-Noise Ratio > -100dB (IEC -A) Total Harmonic Distortion (THD) Gain 22dB Input & Loop-out RCA sockets Sensitivity 1V Input Impedance 47kΩ Speaker Sockets 4mm Ø banana, spade, pin or bare wire Trigger 12V DC In & Out, 2-pole jack socket Ø 2.5mm Power Supply 24V/3A DC (peak 7A DC); 100 - 240V, 50/60Hz Standby Power Consumption Dimensions (W x H x D) 103 x 36 x 104 mm (122 mm with sockets) Weight 670g (without power supply) What's in the Box Pro-Ject Amp Box S Mono amplifier 45cm power-on trigger cable