Portable 3.5mm Headphone Amplifier 16-300 Ohm Hifi Earphone Amp Adjustable. Elevate Your Audio Experience with Our Compact and Portable HiFi Headphone Amplifier. Designed for Music Enthusiasts, This Mini Amplifier Delivers Sharp and Realistic Stereo Sound, Free from Distortion. Its Sleek Aluminum Matte Surface Enhances Both Style and Durability, Making It a Perfect Companion for Any Music Device, from Mobile Phones to Laptops. Featuring a 3.5mm AUX Input and Output, This Headphone Amplifier Supports a Wide Range of Devices and Headphones with an Impedance of 16-300Ω. The Two-stage Gain Switch Boosts the Signal for Optimal Headphone Performance, Ensuring High-quality Audio with a Signal-to-noise Ratio of ≥120dB and a Distortion Rate As Low As 0.004%. Equipped with a Rechargeable 1000mAh Lithium Battery, It Promises over 8 Hours of Uninterrupted Use. For Best Results, Ensure It's Fully Charged and Unplugged Before Use to Avoid Any Interference. Key Features: - Portable Design: Compact Size and Lightweight for Convenient Carrying. - Superior Sound Quality: 3.5mm AUX Input/output for Sharp, Clear Stereo Sound. - High Compatibility: Works with Impedance of 16-300Ω, Compatible with MP3, MP4, Phones, Laptops. - Enhanced Performance: Two-stage Gain Switch and Noise Reduction for Pure Sound. - Long Battery Life: Rechargeable 1000mAh Battery for over 8 Hours of Playtime. - Input/Output Port: 3.5mm Audio Port - Maximum Power Output: 250mW at 16Ω - Frequency Response: 20Hz-20kHz (±3dB) - Charging Voltage: DC 5V - Dimensions: 9.5 X 6.2 X 1.5 Cm - Package Includes: Headphone Amplifier, USB Power Cable, Audio Cable Enhance Your Listening Experience Anywhere, Anytime with This Premium Headphone Amplifier.. Your order tracking code will be sent on shipping and takes up to 5 days to show live information.