This is the Z-TONE Buffer Boost DI preamp from IK Multimedia. It's a versatile DI with a built-in booster and Z-TONE technology, allowing for natural tonal coloration. It's convenient because it can be powered by phantom power, a 9V battery, or a 9VDC power supply (2.1mm center negative) like an effects pedal. I purchased it new and used it a few times in the studio and for live performances. It comes with the original box and all accessories, including the rubber feet. I take good care of my equipment, so there are no noticeable scratches or stains, but please understand that it is a used item. Thank you.