FourChannel Stereo Audio Mixer with Headphone Output Combines four independent stereo audio inputs into a single stereo output, allowing seamless integration of multiple audio sources. Directly drives headphones or connects to a power amplifier for flexible listening and output options. Equipped with a standard 3.5 mm headphone jack for universal compatibility with most headphones and audio cables. Individual volume control potentiometers for each channel ensure precise level adjustments without interference between channels. Operates on a DC power supply ranging from 5V to 12V, with approximately 2x amplification to enhance audio signals. Maximum output driving current of 70 mA, providing sufficient power for a wide range of headphones and external amplifiers. Designed to deliver clear, stable sound; use a low ripple power supply to minimize noise and interference. For audio quality, shielded cables are recommended for all audio connections. Applications: 1. for small home studios or desktop setups where multiple audio sources need to be mixed into one output for recording or monitoring. 2. Ideal for live performance situations requiring balanced mixing of multiple stereo devices such as keyboards, audio players, and instrument processors into a single headphone or amp feed. 3. Suitable for educational or multimedia environments where several audio inputs must be combined and monitored simultaneously. This mixer offers efficient fourchannel stereo blending, precise independent level control, and strong compatibility with headphones and amplifiers, making it a practical, reliable solution for both and professional audio setups.