Thank you for viewing! Product Features This is the popular TASCAM "US-1x2HR" USB audio interface. It's USB bus-powered and also features a loopback function. This is a high-performance model that supports streaming, recording, and iOS. Condition The unit only (no box, cable, manual, etc.) is included, but I was told it was used infrequently. Power-on confirmation via USB power supply has been confirmed. However, since the operation of all functions has not been confirmed, please check them yourself after purchase. Thank you for your understanding that this is a used item. Please feel free to comment if you have any questions.