Portable HiFi Headphone Amplifier

This Portable Headphone Amplifier is designed for mobile Hi-Fi listening applications and is compatible with a wide range of headphones, earphones, and other in-ear monitoring systems.
The high grade design of the amplifier along with its high current, low noise transformer delivers an optimum performance with frequency distortion levels at less than 0.0003%, allowing your music to be listened to as it was intended.
Feature
Low-Distortion Audio Reproduction: achieves < 0.0003% distortion and an increased signal-to-noise ratio of 100dB.
Metal Film Resistors: provide minimum noise and ideal channel balance.
Speaker sound field simulation to lessen the "in-head" sound of headphones.
Built-in rechargeable 2000mAh battery provides approximately 8 hours of operation via mini USB port.
Durable all-metal construction, built to withstand wear and tear.
Volume control knob for headphone outputs.
Charging indicator blinks according to how long charge will take depending on what it is plugged into.
Specifications
Controls volume control on front
Connections 1/8" auxiliary input; 1/8" headphone output
Lithium battery capacity 2000mAH
Amp using time more than 8 hours
Amp internal voltage 8.3V 1A
SNR> 100Db
THD + N 0.0003%
Output power 40Mw in impedance 16 ohms
Adapted headphone impedance 16-150 ohms
Max output level 15dBv @ 1kHz at. 1% dist.
Dimension 9L x 6W x 1.5H cm
Weight 150g
Package included 1 x HiFi Headphone Amp, 1 x USB Charging Cable, 1 x User Manual
Certification RoHS, CE, FCC