Product Description: 4 Way Stereo Sound Mixer Board - 3.5mm Headphone Driver Power Amplifier Mixer Splitter Stereo 2 Input 4 Output: This versatile 4-way stereo mixer board allows you to connect two input sources and distribute the sound to four separate outputs. It can directly drive four headphones or external amplifiers simultaneously without interference, thanks to its 3.5mm input and output jacks. Volume Adjustment: Each channel on the mixer board features an independent volume adjustment knob. This allows you to precisely control the output level for each connected headphone or speaker, ensuring a customized listening experience for every user. Basic Parameters: The mixer board operates on a DC5‑15V power supply and offers an amplification factor of 5x (14dB). Each output's volume is individually controlled by a potentiometer, providing flexibility and precision in sound management. High Current: Equipped with the JRC high current op amp NJM4556A, this mixer board delivers a maximum output current of 70mA. This ensures excellent dynamic fidelity and robust sound quality, making it ideal for both casual listening and professional audio applications. Plug and Play: Designed for ease of use, this amplifier mixer distributor is a plug-and-play solution for mixing multiple sound sources. It is compatible with a wide range of devices, including smartphones, tablets, computers, MP3 players, and CDs, making it perfect for both home and studio environments. Enhance your audio setup with this 4-way stereo sound mixer board, offering superior sound distribution, precise volume control, and high-quality output for all your audio needs.