Features: Ultra-compact phono preamp with metal shell, portable and durable. 2 * RCA(L & R) inputs, 2 * RCA(L & R) outputs, 1 * 1/4" TRS output, multiple connection choices. With level and volume control knobs. For converting the phono signal to a line level signal. Ultra low-noise audio performance, offers excellent sound quality. Specifications: Color: Black Material: Metal Connector: RCA, 1/4" TRS Power Supply: DC 12V Power Adapter: US/ EU plug(optional), input--110-240V 50/60Hz, output--12V 500mA Item Size: 10.3 * 5.7 * 3cm / 4.1 * 2.2 * 1.2in Item Weight: 177g / 6.2oz Package Size: 14 * 10 * 8cm / 5.51 * 3.94 * 3.15in Package Weight: 305g / 10.76oz Package List: 1 * Phono Preamp 1 * Power Adapter