Specifications:

Color：Black

Material: Metal

Maximum Power Output: 350mW 32Ωload

Load Impedance: 16-300Ω

Working Voltage: DC3.7-4.2V

Charging Voltage: DC5V

Frequency Response: 20Hz-20kHz(±3dB)

Battery Capacity: 1000mAh (3,7V) Lithium-Battery

Amp Using Time: More Than 8 Hours

Distortion: 0.004%

SNR: ≥120dB

Dimension(L*W*H): 9.5*6.1*1.5cm/3.74*2.4*0.6in

Features:

【HiFi Headphone Amplifier】It supports most headphones of high impedance 16-300Ω, 3.5mm AUX Input and Output, signal-to-noise ratio> 120Db, THD + N = 0.0004%, fully filter noise, enjoy high-quality audio.

【Two-stage Gain Switch】This Headphone Amp enhances the signal input into the amp circuit for the optimal performance of the headphones. Make it Possibility to output not only louder sound but a sharper and more Real stereo sound without distortion.

【Rechargeable Lithium Battery】It adopts a rechargeable lithium battery with 1000mAH capacity, which allows the headphone amp to stay working more than 12-15h. Plus, there is a volume control knob for volume adjustment.

【Portable and Lightweight 】This headphone amp is designed to enhance your music listening experience wherever life takes you; A sleek, sturdy shell and chassis allow for a durable use.

【Broad Compatibility】-This amplifier is remarkably compatible with a variety of digital devices, such as MP3, MP4, iPhone, iPod, iPad, Computer, CD players and personal media players etc.