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 preampConnector: RCA 1/4 inch connectorPower supply: DC 12VInput: 110-240V 50/60HzOutput: 12V 500mANOTE: 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 5.7cmMaterial: Metalcolour: blackPackage Contents:1 x Phono Preamp1 AdapterOnly 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.