Headphone Amplifier - Portable Headphone amp 3.5mm Stereo Audio Out- Powered Dual-Output with Lithium Battery for iPhone, iPod, iPad，MP3，MP4 and Computers

Features

• Portable Design: Compact headphone amplifier with 3.5mm stereo audio output for enhanced audio experience. Features dedicated power/volume knobs and a gain switch, making it easy to adjust sound levels. Especially useful for overcoming low volume issues on devices like Windows 10 PCs.
• Dual Output: Features powered dual-output capability allowing simultaneous connection of two headphones. 3.5mm input/output supports a wide range of devices such as Nintendo Switch, PS4, iPhone, tablets, laptops, PCs, smartphones, DVD players, MP3/MP4 players, car AUX inputs, and more.
• Power Source: Built-in rechargeable lithium battery for extended portable use and convenience
• Boost Control: 2-level boost function for customizable audio amplification settings
• Device Compatibility: Compatible with iPhone, iPod, iPad, MP3 players, MP4 players, and computers
• Audio Enhancement: Improves sound quality and volume output for various audio devices and headphones
• Universal Compatibility & Connectivity: Standard 3.5mm audio input and output ports for universal device compatibility. Works with MP3/MP4 players, smartphones, laptops, and any device with a 3.5mm audio jack.
• High-Quality Output: 3.5mm AUX input and output ; Signal-to-Noise Ratio (SNR) > 120dB ; Total Harmonic Distortion (THD) as low as 0.004% ; Delivers not just louder, but clearer and sharper sound.