Portable HiFi Headphone Amplifier Amp 3.5mm Headset Amplifier Two-Stage GAIN

Feature:
16-300 Mini HiFi headphone amplifier, It is delicate, compact, lightweight, and portable that it can be carry conveniently.
3.5 mm AUX input and output, SNR>100Db and THD+N 0.0003 %, make it possibility to output not just louder sound, but a sharper and more real stereo sound without distortion.
Two-stage gain switch enhances the signal input into the amp circuit for optimal performance of the headphones.
Aluminum matte surface, fashion design provides you a comfortable handheld feeling while the aluminum matte surface makes it durable.
Rechargeable lithium battery, it adopts a rechargeable lithium battery with 1000mAH capacity, which allows it to stay working more than 8 hours.
Universal compatibility, it can remarkably compatible with a various of digital devices, such as MP3 MP4 mobile phone computer.
Specification:
Lithium battery capacity: 1000mAH
Amp using time: more than 8 hours
Amp battery voltage: DC 3.7V - 4V
Amp internal working voltage: ±4V
SNR>100Db
THD+N 0.0003 %
Output Power: 40Mw in Impedance 16
Adapted Headphone Impedance: 16-300
Dimension: 95 x 61 x 13 (L x W x H)

Package Include:
1 x Headphone Amplifier
1 x USB Power Cable
1 x Audio Cable