Kicker PXIBT100.2 - 2x50-Watt Full-Range Amplifier/Controller w/ Bluetooth Interface RMS Output @ 4-Ohms: 25 watts x 2. RMS Output @ 2-Ohms: 50 watts x 2. Length: 7" (17.8 cm). Height: 1-5/8" (4 cm). Width: 3-7/16" (8.7 cm). USB audio input / charging: 5V/1A. Frequency Response: 20Hz - 20kHz. Signal-to-Noise Ratio: 90 dB. Aux Input Sensitivity: 500mV. Selectable 12dB high-pass crossover: OFF, 60Hz, 80Hz, 120Hz. RCA pre-out voltage: 4.5V RMS.