Portable 3.5mm Audio Amplifier with Lithium Battery

Experience HiFi Audio with this 3.5mm Headphone Amp, designed for MP3 players, mobile phones, computers, and personal media devices. Supports most earphones with high impedance from 16-300Ω. This amplifier comes with a rechargeable 2000mAH lithium power source, offering up to 12-15 hours of continuous playback. The two-stage Gain Switch enhances signal input for optimal audio performance, delivering louder and clearer audio without distortion. Note: It is recommended not to operate while charging, as current interference can lead to noise.