Usage Tips:Ultra-compact phono preamplifier with metal casing, portable and durable. 2xRCA (left and right) input 2xRCA (left and right) output 1x1/4 inch output, multiple connection . With level and volume control knobs. Convert telephone signals to -level signals. Ultra-low audio performance, providing sound . Specification: Item type: Phono preamp Connector: RCA 1/4 inch connector Power supply: DC 12V Input: 110-240V 50/60Hz Output: 12V 500mA NOTE: This is a Preamplifier, not power amplifier. Pls do not place order until you know what a preamplifier is This link is for Professional or Old customers. Plug Type:US Plug,it applies to Canada, ,Mexico, Thailand, the , the Philippines,Taiwan and so on. size: 10.3 x 3 x 5.7cm Material: Metal colour: black Package Contents: 1 x Phono Preamp 1 Adapter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!