Key features

• •[Headphone ohm range]Amp Suitable for Headphone Impedance ranging from 16 to 140 Ohms. Most headphones will be compatible.
• •[Superior sound quality] Our headphone amplifier improve audio quality and makes sound become crystal clear. Increases volume by 20% to 60% (depends on your headphone and music player).
• •[Widely compatible] It can compatible with headphones, portable speakers, MP3, MP4 ,Mobile Phone(3.5mm audio port), Computer, car stereos, and other audio devices that use 3.5 mm plug connectors.
• •[Long-time playing] 120mah battery internal battery powers for up to 8hours+ playing time , 200hours+ standing by time .Full charging time is about 30-40 minutes.
• •[Super-easy to use] This amplifier is easy to set up, without any unnecessary switch or button, it automatically detects the installation and starts up when earphones plugged in. And if plugged out, it automatically turns off.