Four-Channel Micro Amplifier ACM series amplifiers by AudioControl are the perfect blend of power and features for car audio systems from mild to wild. Compact size high power and the ability to help integrate with factory stereo systems are features that assure "Making Good Sound Great" can happen in any installation. Reversible cover plates allow flexible mounting options when paired with AudioControl DM Series Processors or when using multiple ACM series amplifiers in confined spaces. Once again AudioControl comes to the rescue combining features and benefits needed to assure audio euphoria in an automotive setting. Features: 4 x 75 watts @ 2 ohms 4 x 50 watts @ 4 ohms 150 watts @ 4 ohms bridged GTO Signal Sense Active speaker-level inputs for OEM integration RCA Line Inputs Linkwitz-Riley Crossover Reversible Cover Plate Bulletproof 5-year warranty (when installed by an authorized AudioControl dealer) What's in the Box ACM-4.300 Speaker connectors Fuse Manual 5 Year Warranty Specifications InputsPreamp Inputs: 4 Balanced Preamp Input Voltage Range: 500 mV 6 Vrms Speaker Level Inputs: 4 Speaker Level Input Voltage Range: 3 V 40 Vrms OutputsRated Continuous (RMS) Power at 14.4V:4 50 W x 4 RMS 2 75 W x 4 RMS Bridged 4 150 W RMS PerformanceFrequency Response: 10 Hz 22 kHz Signal to Noise: 102 dBA Ref 50 W @ 4 Ohm THD+N: 0.01% Power / Ground Wire Gauge: 10 to 4 AWG wire Fuse Rating: 1 x 30 A Crossover: 12 dB/octave Linkwitz-Riley 80 Hz 120 Hz Bypass PFM Subsonic Filter: 32 Hz Weight DimensionsDimensions (W x H x D): 9.4" x 1.75" x 3.0" Weight: 2.2 lbs. (0.98 kg)