Portable HiFi Headphone Amplifier Headphone Amp 3.5mm Stereo Audio Out with Switch Powered Dual-Output with 2-Level Boost

Feature: 1. Mini HiFi headphone amplifier, It is delicate, compact, lightweight, and portable that it can be carry conveniently. 2. 3.5mm 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. 3.Two-stage gain switch enhances the signal input into the amp circuit for optimal performance of the headphones 4. Aluminum matte surface, fashion design provides you a comfortable handheld feeling while the aluminum matte surface makes it durable. 5. Rechargeable lithium battery, it adopts a rechargeable lithium battery with 600mAH capacity, which allows it to stay working more than 8 Hours. 6. Universal compatibility, it can remarkably compatible with a various of digital devices, such as MP3 MP4 mobile phone computer. Specification: Lithium Battery Capacity: 600mAH Amp Using Time: More Than 8 Hours Amp Internal Voltage: ±4V/1A SNR>100Db THD+N 0.0003% Output Power: 40Mw in Impedance 16Ω Adapted Headphone Impedance: 16-300Ω Dimension: 95 x 52 x 13(L x W x H) Amp battery voltage: DC3.7V - 4V Package Content: 1 x Headphone Amplifier 1 x USB Power Cable 1 x Audio Cable 1 x User's Manual