Feature: 1. Versatile Power Options: Operates on DC5V with dual isolation circuits and built in isolated power supply, providing ground isolation for sound inputs, ideal for use with computers, phones, gaming consoles, and car sound systems. 2. Stereo 2 Inputs 1 Output: Sound mixer support for connecting two sound inputs simultaneously, each track with independent volume control knobs for personalized headphone and speaker output. 3. Excellent Performance: Sound mixer utilizes JRC, NJM4580, and NJM4556A high current analog operational amplifiers for effortlessly driving a variety of headphones with warm and pleasant sound quality. 4. Ground Isolation for Clarity: Sound mixer with common ground insulation to solve ground interference issues, commonly known as ground loop noise, when connecting multiple sound devices, ensuring clear and crisp sound output without unwanted buzzing or humming. 5. Robust Aluminum Alloy Construction: Crafted from robust and reliable aluminum alloy material, guaranteeing longevity and stability for long term use in music production and mixing applications. Specification: Item Type: Mini Sound Mixer Material: Aluminum Alloy Working Voltage: 5V Output Impedance: 16Ω to 600Ω Output Power: 600mw x 2, 32Ω Input, Output Ports: 3.5mm . Package List: 1 x Mini Sound Mixer 2 x Sound Cables 1 x USB Cable Note: This product can only eliminate interference generated by common ground, and cannot eliminate noise generated by other reasons.