Amazing vintage rackmount delay.  Great for use in the studio or at the show.  I am unsure as to what the back outputs do and if the footswitch input works.  The item has some wear but seems to be in perfect working condition no including the things I can't test.  It makes some really awesome noises and the balance knob adds a really cool feature since you can go from a normal guitar sound to chaos with the twist of the knob.  The volume knob crackles.  No foot switch included.  Feel free to ask me any questions.