Forget about space limitations, these diminutive amplifiers generate great power so do not be fooled by its small stature. These amplifiers are equipped with auxiliary direct high level matching input with adjustment and can be utilized with any portable MP3 player, smartphone, or tablet. Designed with the latest Class D IR chipset technology and encased with an industrial-grade aluminum heatsink, the new STEALTH BOMBER amplifiers take small to another level! With STEALTH BOMBER series amplifiers from Cerwin-Vega Mobile, the possibilities are endless for audio systems whether it is in a traditional vehicle, an ATV/UTV, or boat/marine application! STEALTH BOMBER * Ultra Compact High Density Aluminum Alloy Chassis * IC Audio Driver Provides Superior Overload Protection * Auxiliary Direct High Level Matching Input with Adjustment * 4-Channel * Power Handling: 150W X 4 @ 2 Ohms / 80 X 4 @ 4 Ohms. * Signal to Noise / THD: 101.1dBa / 0.5%. * Input Sens. / Min-Max Voltage: 0.2V - 5.0V / 10.0VDC-17.0VDC. * Variable high-pass filter (50-250 Hz, 24 dB/octave) * Variable low-pass filter (25-250 Hz, 24 dB/octave) * Vega Bass Boost (0-18dB @ 45hz) * Subsonic filter (24 dB at 15-55 Hz) * Crossover: 25Hz-250Hz/50-200Hz. * Frequency Response: 10Hz-35KHz. * Remote Level Control / Bass EQ: 40Hz-250Hz. * Dimensions: 1.4"/35.5mm X 4.02"/102.1mm X 8.7"/221mm.