Portable Hifi Headphone Amplifier 3.5mm Aux Audio Amp, 16-300 Ohm Adjustable. Introducing the HiFi Headphone Amplifier, a Versatile and Portable Solution for Elevating Your Audio Experience. Designed for Music Enthusiasts, This Compact Amplifier Enhances Sound Quality, Offering Clearer and Distortion-free Stereo Output. It Features a 3.5mm AUX Input and Output, Allowing for Seamless Connection with Various Devices. With a Two-stage Gain Switch, You Can Optimize the Performance of Your Headphones for Any Audio Situation. Powered by a Rechargeable 1000mAH Lithium Battery, Enjoy over 8 Hours of Uninterrupted Listening. Its Universal Compatibility Makes It Suitable for Use with MP3 Players, Mobile Phones, and Computers, Adapting to Headphones with an Impedance Range of 16-300Ω. Features: - Compact Design: Portable and Lightweight for Easy Transport. - Enhanced Audio: Delivers Louder, Clearer Sound with Minimal Distortion. - Two-Stage Gain Switch: Optimizes Signal Input for Optimal Headphone Performance. - Long Battery Life: Over 8 Hours of Use with a Rechargeable 1000mAH Battery. - Universal Compatibility: Works with a Variety of Digital Devices. - Adapted Headphone Impedance: Suitable for 16-300Ω Headphones. - Battery Capacity: 1000mAH - Usage Time: More Than 8 Hours - Dimensions: 9.5 X 6 X 1.5 Cm Package Includes: - Headphone Amplifier - USB Power Cable - Audio Cable - User's Manual. Your order tracking code will be sent on shipping and takes up to 5 days to show live information.