Description: Distortion: 0.01% Frequency response: ±1dB Signal to noise ratio: 101dB Power: (4?) 70W, (8?) 35W Input sensitivity: 775mv Amplifier impedance: 4? 6? 8? Supply voltage: DC12V-24V TPA3250 high fidelity amplifier chip HIFI chip high power output, mini power amplifier HIFI high power home digital amplifier Package Includes: 1x Digital High Power Amplifier