A Radial JDX speaker-level "reactive amp emulation" DI box, with its original Radial 15v dc power supply. It has been used by me for years as a touring sound engineer. ( I mostly used it with Marshall 900's & Fender twins, where it lives between the head's speaker output, and the cabinet's speaker input ) These boxes sound great!! Has been well taken care of and in good shape. I will package it well & ship it out to you! - If you are looking at listings for these things, understand that this version of the JDX requires a very specific positive tip 15v dc power supply that can be tricky to find. If you see listings for a JDX for sale without that supply you will need to find one for it to work. The JDX48 works with phantom power from a console or interface OR with that same power supply. This is NOT the jdx48, this is the original JDX that radial brought out around 2012 ( and its original radial power supply )