Compact class D audio amplifier 4x100 watts at 4 ohm, working single feed (comprised between 10 and 30 volts) and capable of driving four passive speakers with 4 ohm and 8 ohm impedance. Based on the two high-performance chips TC2000 and TP2050, it has thermal protection, automatic shutdown in case of over / under voltage, mounting holes for easy installation and heatsink with cooling fan which ensures excellent heat dissipation. Dimensions (mm): 153 (length) x 112 (width) x 53 (height), weight: 510 grams.                                                                                                                                 More info here