Features: 1. Current /Amperage Overload, Short Circuits, Thermal Overload,DC Offset. 2. Mono 600 Watts Car Audio Amplifier gives you a wonderful in-car entertainment. 3. High power, good sound quality, no distortion, give you a great hearing enjoyment. 4. Light weight, handy and easy to install. 5. Powerful Bass. Max power: 600W Impedance: 4 OhMs Sensitivity: 75-90DB Distortion: 0.01% horn: can push 8inch 10inch 12inch horn Treble: 4 EUR 10 W Colour: Black Material: Metal Package Contents: 1 x 12V 600W PA-60A Amplifier Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.