Product Category: Class D stereo amplifier Operating Voltage: DC 7-30V Output Power: Rated power 2x85W (4 ohm) Load Compatibility: 3, 4, 8, or 16 ohm speakers Maximum Power: 2 x 105W (4 ohm) Efficiency: 92% Total Harmonic Distortion plus Noise: Less than 1% Gain: 34 dB Low Quiescent Current Noise Suppression Protection Features: - Power Input Reverse Protection - Overcurrent Protection - Overheat Protection - Under-Voltage and Over-Voltage Protection Input Options: - 3.5mm Audio Input - 3P 2.54mm Wiring Terminal Audio Input Indicator Status: 1. Power Normal Operation 2. Alarm Sound Distortion 3. Error Trigger Protection Color: Black Material: Plastic Package Contents: 1 x Amplifier Board Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.