Feature: Ultra-compact phono preamplifier with metal casing, portable and durable. 2xRCA (left and right) input 2xRCA (left and right) output 1x1/4''TRS output, multiple connection options. With level and volume control knobs. Convert telephone signals to line-level signals. Ultra-low audio performance, providing excellent sound quality. Specification: Item type: Phono preamp Connector: RCA 1/4''TRS connector Power supply: DC 12V Input: 110-240V 50/60Hz Output: 12V 500mA material: metal Size: 10.3x5.7x3cm/4.05x2.2x1.1in Colour: Black Plug type: US plug, EU plug Quantity: 1 piece Notes: Transition: 1cm=10mm=0.39inch Due to manual measurement, please allow an error of 0-1cm. Please make sure you don't mind before bidding. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Thanks! The package includes: 1 x Phono preamp 1 x power adapter