1. Input voltage: DC 13.5V
2. Frequency response: 20Hz-20KHz
3. Output power: 45W x 4 RMS
4. SNR: >=80dB
5. Load impedance: 4~8 Ohm
6. Input current: 5A
7. Total harmonic distortion: less than 1%
8. Input sensitivity: 200mV
9.Input impedance: 47K