Item Type: Passive Preamp Volume Controller Material: Metal Weight: Approx. 496g/17.5oz Package List 1 x Passive Preamp Volume Controller 1 x Specification 1Exquisite Craftsmanship: With its all metal shell and gold plated anti interference connectors, this passive preamp volume controller is meticulously crafted to provide a durable and erosion resistant design. 2Precise Adjustment: The easy to use controls allow for precise adjustment, delivering lossless output and creating a smooth and transparent sound. Immerse yourself in the beauty of your favorite music with accurate and adjustable volume control. 3Plug and Play: Equipped with a pair of gold plated RCA connectors, this preamp volume controller requires no power supply, simply plug it in and start using it. 4Versatile Compatibility: This passive preamp volume controller is compatible with a wide range of devices, including computer sound cards, decoders, CD players, active speakers, and power amplifiers. 5Compact and Portable: The compact size of this passive preamp volume controller makes it convenient to carry around, enabling you to enjoy excellent music anytime and anywhere.