Channel Stereo Headphone Amplifier. Immerse yourself in superior sound quality and enjoy high-power stereo with volume control for each channel. The amplifier features 4 x 3.5mm output ports and 1 x 3.5mm input port, making it compatible with 3.5mm headphones. Anti-crosstalk: This ultra-low-noise amplifier system is designed to provide anti-crosstalk, allowing for seamless distribution of up to 4 audio signals or headphones. Experience crystal-clear sound performance in both studio and stage applications. Level control: Each channel of the headphone amplifier includes level control, delivering high-fidelity analog circuitry, high power output, dynamic sound, and low distortion. Enjoy personalized volume control and reduced interference noise. Safety and stability: The amplifier is powered by a 5V AC adapter and features a high-quality aluminum housing that ensures durability, safety, and optimal sound quality. Material: Aluminum Color: Black Package Contents: 1 x Headphone Amplifier Note: Light reflection and different display settings may cause slight variations in the color of the item in the picture compared to the actual product. Measurement error is +/- 1-3 cm.