Two-Stage Gain Switch: Headphone Amplifier High/Low gain switch for optimal performance of the headphones.
3.5mm AUX Input and Output: Load Impedance 16-300O. Make it Possibility to Output not just Louder Sound, but a Sharper and More Real Stereo Sound without Distortion
Aluminum Matte Surface: Fashion Design Provides You a Comfortable Handheld Feeling While the Aluminum Matte Surface Makes it Durable
Rechargeable Lithium Battery: Headphone Amplifier It Adopts a Rechargeable Lithium Battery with 1080mAH Capacity, Which Allows it to Stay Working More than 8 Hours
Wide Compacity: It can Remarkably Compatible with a Various of Digital Devices, Such as MP3 MP4 Mobile Phone Computer (Tips: It is not recommended to use while charging, because current disturbance will occur when charging, Which may lead to noise)
