MA5000PM Power Amplifier HIFI Class Pure Class A High Power Amplifier Home Amp 120W×2. Features: – MA-5000PM power amplifier parameter details: – Pure Class A rated continuous average output power: 120W+120W (8?) – Total Harmonic Distortion: 0.05%(2? Load);0.02%(4-16? Load) – Intermodulation Distortion: 0.01% Frequency characteristics: – Rated continuous average output: 20-20KHz (+0, -0.2dB) – Output power is 1W: 0.5-160KHz (+0, -3dB) – Damping coefficient: 1000(8? Load, 50Hz) – Input impedance: Average input: 40K? ; RCA input: 20K? – Gain power: 28dB – Signal-to-noise ratio: 122dB – Load impedance: 2-16? – Power Requirements: AC220V 50-60Hz – Static power consumption. Usually it cost about 35USD-50USD. Thanks for your understanding. If you receive defective item, please kindly notify us within 14 days.