Description: Sound quality is very good and it can drive 4/6/8 ohm speakers. It has sufficient and high power output 2 x 160W. It supports BTL mode and when heat sink temperature rises to a certain extent, the cooling fan will work. Features:1, High output power digital amplifier. 2, DC 15-36V power supply, with reverse polarity protection. 3, When heat sink temperature rises to a certain extent, the cooling fan will work. 4, Support BTL mode ( J1, J2, J3, J4 on the back of amplifier board should be shorted), 36V 3ohm for single channel with 220W output. 5, Two-channel stereo, sound quality is very good. Specifications:Amplifier Chip: TDA7498E Working Voltage: DC 15-36V(Recommend 32V, 8A) Output Power: 2 x 160W Number of Channels: Two-channel Stereo Efficiency: 85% Applicable Speaker Impedance: 4/6/8ohm(8ohm is the best) PCBBoard Size: 108 x 78mm / 4.25 x 3.1"Weight: 172g(approx.)Package includes:1 x Digital Amplifier Board 1 Set Accessories PackageNote:1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..