Description 1. Six-Level Precise Attenuation: Achieve perfect volume control with our audio level attenuator, featuring 6 selectable attenuation levels: 0dB, -3dB, -6dB, -9dB, -12dB, and -15dB. The intuitive stepped adjustment knob allows you to easily reduce signal strength, effectively preventing equipment overload, damage, and reducing audio distortion at high volume. 2. Versatile Input/Output Interfaces: This UY-SJ303 attenuator offers a wide range of connection possibilities. INPUT Side: Features an XLR/6.5TRS composite input interface (supporting standard male/female balanced input and 6.5mm mono/stereo non-balanced input), an RCA interface for home audio/players, and a 3.5mm AUX interface for phone/tablet connection. OUTPUT Side: Includes 3.5mm AUX, RCA, 6.5TRS, and XLR interfaces, ensuring compatibility with virtually any professional or consumer audio gear. 3.Premium Sockets: Experience superior signal transfer and long-lasting reliability. All input and output sockets are meticulously to minimize signal loss, provide stable connections, and resist corrosion, ensuring pristine audio quality for years of service. 4. Compact Design & Specific Dimensions: Designed for portability and easy integration into any setup, this audio attenuator measures approximately 8.8 x 3.8 x 8 cm (3.46" x 1.50" x 3.15"). Its compact size and robust metal housing make it an ideal choice for both studio and field applications, without occupying valuable space. 5. Protect Gear & Enhance Sound: More than just a volume knob, this device is a critical component for optimizing audio setups. By lowering signal levels accurately, it protects sensitive speakers and recorders from overloading while improving overall sound clarity at higher volumes. Ideal for connecting high-level outputs to microphone inputs or balancing signals between different devices. Package list Audio Attenuator*1