Play your music loud and clear Power makes good speakers sound great, but where to put an amp in your smaller vehicle? AudioControl comes to the rescue with their compact ACM-4.300 4-channel amp, which delivers 50 watts RMS per channel - perfect for two sets of speakers. This tiny, hand-size amplifier will fit almost anywhere in almost any kind of vehicle, improving the impact and clarity of your music. Even better, it features high-level inputs with signal-sensing turn-on, so it'll work with almost any stereo system, even one using a factory radio. Versatility and practical features To simplify setup, a "Maximized" LED indicates when you've set the amplifier's gain for optimum performance. Like it loud? This amp can also operate in two-channel mode to power a pair of high-performance speakers with 150 watts RMS each. ACM-4.300 controls and connections