Features: brand new and high quality 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. Specifications: Color: Black Material: Metal Connector: RCA 1/4" TRS Plug Power supply: for DC 12V Power Adapter: US/EU Input:110-240V 50/60Hz Output:12V 500mA Size:Approx.10.3x5.7x3cm//4.05x2.2x1.1 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Phono Preamp 1x Power Adapter