Features: Elevate your auditory experience with the HA4 PLUS Portable Headphone Amplifier Featuring a stereos sound enhancement that caters to audiophiles and professionals alike. This 1 to 4 headphone splitter is designed with superior amplification chips, ensuring clear sound quality for multiple listeners from a single source. For music enthusiasts, auditory producers, recording engineers, and anyone demanding exceptional sound quality in their auditory devices. Perfect for group travel, dormitory living, or family entertainment setups, the HA4 PLUS allows for an immersive auditory sharing experience wherever you go. Specifications: Item: HA4 PLUS 1 to 4 Headphone Amplifier Component:Metal Size:about 105x58x32MM/4.13x2.28x1.26in Package Includes: 1PC HA4 PLUS 1 to 4 Headphone Amplifier note: Due to problem of lighting effect and shootings, there will be tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement.