Product Description: 3.5mm Volume Control Box with Balance Adjuster Stepless Volume Control: Experience precise audio control with the 3.5mm volume control knob, allowing you to fine-tune sound levels to your exact preference. This device supports stereo sound with independent left and right channel balance adjustment, giving you complete control over your listening experience. Lossless Sound Quality: Enjoy exceptional auditory clarity with the advanced ground isolation circuit design, which ensures zero attenuation of sound signals. This feature delivers lossless sound with precise accuracy and crystal-clear clarity, enhancing your overall audio experience. Quality Build: Constructed with a robust aluminum alloy housing, this volume control box offers excellent durability and signal isolation. It provides effective EMI/RFI shielding, ensuring superior performance and an extended product lifespan, making it a valuable investment for sound enthusiasts. Easy to Use: Designed for simplicity, this device requires no tangled cables or complicated setup. With its plug-and-play design, no power is needed, allowing you to easily switch connected sound lines to select output/input devices. This user-friendly feature makes it accessible for anyone to use. Wide Compatibility: Compatible with a broad range of devices featuring 3.5mm interfaces, this volume control box is ideal for small sound signal control. It is commonly used between sound sources and amplifiers, preamps and amplifiers, and sound sources and powered speakers, including CD players, digital sound players, mixers, amplifiers, and more. Enhance your audio setup with this versatile 3.5mm Volume Control Box, designed to provide precise sound control and exceptional audio quality. Whether you're a casual listener or an audiophile, this device offers the perfect blend of functionality and performance for all your audio needs.