Digital Amplifier Board, TDA7498E 160W+160W High Power Dual Channel Audio Stereo Power Amplifier Board Module, Audio Amplifier Board Support BTL220W^p Features: This TDA7498E is a dual BTL class-D audio amplifier with a single power supply designed for home systems and active speaker applications. Differential inputs minimize common-mode noise. Standby and mute features. Smart protection. Thermal overload protection. Reverse polarity protection. Small offset less than 20 mV. When heat sink temperature rises to a certain extent, the cooling fan will work. Support BTL mode, 36V 3ohm for single channel with 220W output. Two-channel stereo for good sound quality. Specifications: Amplifier Chip: TDA7498E Working Voltage: DC 14-36V Output Power: 2 x 160W Number of Channels: Two-channel Stereo Efficiency: 85% Applicable Speaker Impedance: 4-8ohm(8ohm is the best) Frequency response: 20Hz-20KHz P CB Board Size: 120 x 78mm Weight: 160g(approx.) ? Package includes: 1 x Digital Amplifier Board