Exquisite Craftsmanship: Featuring an all-metal shell and gold-plated anti-interference connectors, this passive preamp volume controller is designed for durability and resistance to corrosion. Precise Adjustment: The user-friendly controls allow for accurate volume adjustment, delivering lossless audio output and a smooth, transparent sound experience. Enjoy the clarity of your favorite music with reliable volume control. Plug and Play: Equipped with a pair of gold-plated RCA connectors, this passive preamp requires no external power supply. Simply connect and use. Versatile Compatibility: Compatible with various audio devices such as computer sound cards, decoders, CD players, active speakers, and power amplifiers. Compact and Portable: Its compact design makes it easy to carry, allowing you to enhance your audio setup wherever you go. Item Type: Passive Preamp Volume Controller Material: Metal Weight: Approx. 496g / 17.5oz Package List: 1 x Passive Preamp Volume Controller 1 x Specification Sheet