Douk Audio U3 Mini Class A Headphone Amplifier HiFi Desktop Home Stereo Amp DC5V

Parameters: Audio input: stereo L/R RCA Audio output: 6.35mm headphone jack (with 6.35mm to 3.5mm adapter) Output power: ?1300mW (32?) Matched headphone impedance: 18-600? Frequency response: 20-30KHz Signal to noise ratio: ?110DB Max output amplitude voltage: 25V Input voltage: DC 5-20V Dimension(W*D*H): 67*93*30mm / 2.64*3.66*1.18in Net weight: 169g / 0.37lb Package weight: 210g / 0.68lbPacki...