Description: Clear Sound Quality: This Headphone Amplifier is made of pp and metal, provides Clear level sound quality, allowing you to enjoy a purer and more detailed music experience Powerful Amplification: Portable Headphone Amplifier can effectively enhance the driving force of headphones, making the music more dynamic and detailed, providing you with an immersive listening experience Compact Size: Portable and lightweight Headphone Volume Amplifier offers precision volume control during live performances or studio Plug and Play Convenience: This device is designed for easy use with a simple plug-and-play setup. Simply Connect it to your device's interface, convenient to use Wide Use: Clear Earphone Amp for headphones with 3.5mm interface, comes with a 6.35mm adapter, fits various devices such as phones and computers         Specification: Material: PP, Metal   Size Chart: 9.6cmx2.6cmx3.15cm/3.78inchx1.02inchx1.24inch     Package Includes: 1 Headphone Amplifier Note: Please allow slightly errors due to manual measurement and different monitors.