Blaupunkt EP1200X Digital Bass Enhancer Bass Note Restorer Maximum Input Level: 15V RMS Maximum Output Level: 13.5V peak Frequency Response: 10Hz - 100KHz; +/- 1dB Total Harmonic Distortion: 0.003% Signal Noise to Ratio: 130dB Balanced Input Noise Rejection: >60dB Input Impedance: 10K Ohms Output Impedance 150 Ohms Power Supply: High Headroom PWM Power Draw: 150mA Recommended Fuse Rating: 1 Amp Dimensions: 7.5 x 5.2 x 1.1 in