Unit powers on an seems to be working with minimal testing. I am not very knowledgable on these types of units but was able to get it to play output and messed around with some of the mixing features. Both drives were stuck and not opening. I had to wiggle them back and forth for a few minutes each, now they seem to open fine. There is a sticky residue on the front of the drives that may have been making them stuck. I would say that the unit is working but unable to fully test so I would not guarantee it to be plug and play. Will need some cleaning to get the sticky residue off some of the front and the buttons. Thank you for your interest in this item! Most units will ship out next business day. Please feel free to reach out with any questions. I do not accept returns at this time, but will work with you if there is an issue. I strive for 100% feedback and making sure the customer is getting what they bought! - Ryan