*eSynic Professional HiFi Headphone Amplifier*-----:The eSynic Mini Earphone Amplifier Supports 16-300? Impedance Headphone. 3.5mm AUX Input and Output, SNR>100Db and THD+N 0.0003%, Fully Filter Noise, Enjoy High-quality Audio. It is Delicate, Compact, Lightweight, and Portable.
*Support Bluetooth 5.0*-----:The eSynic Professional HiFi Headphone Amplifier also as a Bluetooth Amplifier is Designed to Paring with Your Bluetooth Trasmitter Devices(Such as Moblie Phone), to Deliver Studio-quality Sound to Your Wired Headphones, Earphones, Headsets or Even Speakers.
* With Two-stage Gain Switch*-----: :The eSynic Bluetooth Earphone Amplifier's High/Low Gain Switch Enhances the Signal Input Into the Amp Circuit for Optimal Performance of the Headphones. Output Not Only Louder Sound, But a Sharper and More Real Stereo Sound without Distortion.
*With Rechargeable Lithium Battery*---:This HiFi Headphone Amplifier Adopts a Rechargeable Lithium Battery with 1000mAH Capacity, which Allows It to Stay Working More than 8 Hours. Beside, the Amplifier Comes with USB Cable and 100cm Audio Cable.
*Universal Compatibility*-----:Our Headphone Amp can Remarkably Compatible with a Various of Digital Devices, Such as MP3, MP4, Mobile Phone, Computer, Portable CD Players, Notebooks, Personal Media Players.