HiFi 16-300Ω Audio 3.5mm Portable Stereo Headphone Volume Amplifier Adjustable For Music Player

HiFi Headphone Amplifier 16-300Ω Audio Amplifier 3.5mm Portable Stereo Headphone Volume Amplifier Adjustable for Music Player Feature: Support most high-impedance 16-300Ω headphones, 3.5mm AUX input and output, signal-to-noise ratio>100Db, THD+N=0.0003%, fully filter out noise, and enjoy high-quality audio [Two-stage gain switch]-This headphone amplifier enhances the signal input to the amplifier circuit to achieve the best performance of the headphone. It can not only output louder sound, but also output clearer and more realistic stereo without distortion [Rechargeable Lithium Battery]--Adopt 600mAH rechargeable lithium battery, which can keep the headphone amplifier working for more than 8 hours. In addition, there is a volume control knob to adjust the volume [Portable and Lightweight]--This headphone amplifier is designed to let you enjoy music anytime, anywhere; the smooth, sturdy shell and chassis can achieve long-lasting use [Wide compatibility]-This amplifier is very compatible with various digital devices, such as for MP3, MP4,for iPhone,for iPod, for iPad, computers, CD players and personal media players, for Xbox one, for PS4, for PS5 controllers, etc. [Good sound quality]-restore the real sound quality with a wide dynamic range, reduce the distortion rate to create a wide and deep sound field, and the sound quality is delicate and accurate. Specification: Plug and play, with volume adjustment knob. Load impedance: 16-300Ω Audio input: 3.5 mm jack Audio output: 3.5 mm jack Battery capacity: 600mAh Working voltage: DC3.7-4.2V Charging voltage: DC5V * When the headphone amplifier is fully charged, it can work for 8 hours. * Charging takes 1 to 2 hours, "red light" * When the battery is fully charged, it will automatically stop charging and "light up in blue" Note: There may be current interference during charging, please avoid using a headphone amplifier to connect to the phone during charging Package included: 1*Earphone Amplifier 1*Audio cable 1*USB power supply line 1*Manual