Portable Headphone Amplifier
   
NX1A
Upgrade of NX1. Keep same sound performance as NX1 but provide 150h playback time.
  NX2
NX2 provide you smaller size than NX1 and built-in USB DAC, supports PC and most Android 4.0 and higher smart phone.
  NX3
TPA6120A2 high performance amplifier. Providing mega bass, adaptive charging and low battery reminder.
         
     
NX4
Headphone amplifier with built-in USB DAC, support iphone, ipad and parts of Android phone.
  NX5
Higher performance amplifier. Providing mega bass, adaptive charging and low battery reminder.
   
         
Desktop Headphone Amplifier
       
A30
Desktop headphone amplifier, can build a suit set with D30.