ITEM NAME:TDA7498E 160W+160W 2 Channel Digital Audio High Power Amplifier Board Modul A1H2 TDA7498E 160W+160W 2 Channel Digital Audio High Power Amplifier Board Modul A1H2 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. High output power digital amplifier. DC 15-36V power supply, with reverse polarity protection. When heat sink temperature rises to a certain extent, the cooling fan will work. Support BTL mode ( J1, J2, J3, J4 on the back of amplifier board should be shorted), 36V 3ohm for single channel with 220W output. Two-channel stereo, sound quality is very good. Amplifier Chip: TDA7498E Working Voltage: DC 15-36V(Recommend 32V, 8A) Number of Channels: Two-channel Stereo Efficiency: 85% Applicable Speaker Impedance: 4/6/8ohm(8ohm is the best) PCB Board Size: 108 x 78mm / 4.25 x 3.1in Weight: 172g(approx.) colour: Photo Color Material: PC+ metal Package Contents: 1 * Digital Amplifier Board Only the above package content, other products are not included. Note: Light shooting 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.