power ads MB-Q500.4, 4 channel class ab power amplifier high efficiency mosfet power supply variable low pass and high pass crossover extra heavy heat sink for better dissipation thermal / short circuit / overloading protection Spesifikasi: Output 4 ohm 50W x 4 channel 150W x 2 channel (bridge) Respon Frekwensi: 20Hz - 20 kHz Dimensi: 33x20x4.5cm