Usage Tips:High Fidelity USB : The CX31993 Headphone Amplifier features a high fidelity USB , ensuring superior audio quality for your headphones. Type C Compatibility: Designed with Type C compatibility, this device is -proof and can adapt to changing technology . 3.5mm Headphone Amplifier: Equipped with a 3.5mm headphone amplifier, it enhances the audio output, providing a rich and immersive sound experience. IEM AMP Mobile Phone Adapter: This product doubles as an IEM AMP mobile phone adapter, making it a versatile accessory for your smartphone. Compact Design: Its compact design makes it easy to carry around, perfect for travel or on-the-go use. Enhanced Audio Decoder: The integrated audio decoder enhances sound quality, delivering a superior audio experience. CX31993 HiFi USB Type C To 3.5mm Headphone Amplifier Audio Decoder IEM AMP Mobile Phone Adapter Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Type:A:Copper Silver Mixed Line Colour:Copper and Silver Mixed Material:Metal Package Contents: 1 * Headphone Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.