Very nice Arcam Black Box 500 DAC/Digital Preamp in excellent condition. This DAC has an easy, "analog-like" sound which we have been impressed by. I bought this from Echo audio as a spare, while my other DAC was being repaired. I found this unit very satisfying. This unit has a volume control, making it a great choice for a simple system without a seperate preamp. No original box, but I located a box from another piece of equipment that fits this perfectly, so it will be easy to ship safely. Please write to me at AOKC@warwick.net with any questions. Thank you.