For those who need the best control sound quality and competence the Alpine PDX-5 75W 5-Channel Amplifier equipped with “Super-efficient Class-D” grade microprocessor is the ideal choice. This amplifier supplies 75 watts RMS power output for each of its four channels and 300 watts power for a subwoofer channel. The Alpine PDX-5 75W 5-Channel Amplifier has a dual sided glass epoxy PC board for durability. To minimize the internal noise and to stop base interruption the unit comes with the STAR shaped circuit assembly. The Alpine amplifier features corrosion-free gold plated RCA input connectors for improved signal transfer. This amplifier comes with a LED power indicator that alerts you during over-current and over-voltage conditions offering enhanced thermal protection.