RuiPuo Headphone Amplifier - 3.5mm 1000mAh

Headphone Amplifier Portable Headphone Amplifier can output remarkable sound without distortion. Small portable headphone amplifier, small size, easy to carry. The high/low gain switch can achieve the best performance of the headphones. Plug and play, with volume adjustment knob. The load impedance of 16-300Ω is suitable for SONY, Sennheiser RS120, HDR 120 and beyerdynamic headphones. Audio Input: 3.5 mm Jack Audio output: 3.5 mm Jack Battery capacity: 1000mAh *When the Headphone Amplifier is fully charged,it can work for 15 hours. *It takes 1 to 2 hours to charge, "bright red light" * After the battery is fully charged, it will automatically stop charging, "bright blue light" Working voltage: DC3.7-4.2V Charging voltage: DC5V Note: There may be current interference when charging, please avoid using it while charging. The package contains: 1× Headphone Amp 1× USB cabler 1× 3.5 audio cabler 1× 30cm 3.5 audio cabler 1× User Manual