Supports most high-impedance 16-300Ω headphones, 3.5mm AUX input and output, signal-to-noise ratio >100Db, THD N=0.0003%, completely filtering out noise and enjoying high-quality audio. Two-Stage Gain Switch: This headphone amplifier enhances the signal input to the amplifier circuit for optimal performance from your headphones. Not only can it output louder sound, but it can also output clearer and more realistic stereo sound without distortion. Rechargeable Lithium Battery: Using 1000 mAh rechargeable lithium battery, the headphone amplifier can work for more than 8 hours. In addition, there is a volume control knob for adjusting the volume. Portable and Lightweight: This headphone amplifier is designed to allow you to enjoy music anytime, anywhere, and the sturdy aluminum alloy shell allows for long-term use. Wide Compatibility: This amplifier is very compatible with various digital devices, such as for MP3, for MP4, for iPhone, for iPod, for iPad, computers, and personal media players, for Xbox. Description: Introducing our Portable and Lightweight headphone amp adapter, the perfect companion for music lovers on the go. Crafted with a sturdy aluminum alloy shell, this headphone amplifier is designed for long-term use and durability. The built-in 1000mAH rechargeable lithium battery ensures over 8 hours of continuous playback, allowing you to enjoy your favorite tunes without interruption. Equipped with a volume control knob and a two-stage gain switch, this amplifier enhances the signal input for optimal performance, delivering louder, clearer, and more realistic stereo sound without distortion. It supports most high-impedance 16-300Ω headphones and features a 3.5mm AUX input and output for seamless connectivity with various digital devices such as MP3 players, MP4 players, iPhones, iPods, iPads, computers, personal media players, and for Xbox. With a signal-to-noise ratio of >100Db and THD N=0.0003%, this amplifier effectively filters out noise, ensuring high-quality audio enjoyment. Its wide compatibility makes it a versatile choice for music enthusiasts looking to elevate their listening experience. Whether you're at home or on the move, our headphone amp adapter allows you to immerse yourself in premium sound quality anytime, anywhere. Item Name: Earphone Amp Adapter Material: Metal Features: HiFi Stereo Sound, Rechargeable, Volume Adjustment Size Details: L: 9.4cm/3.7", W: 6.1cm/2.4", H: 1.6cm/0.63" (Approx.) Audio Cable Length: 95cm/37.4" (Approx.) Power Supply Cord Length: 95cm/37.4" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Earphone Amp Adapter Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.