You are bidding on a
DIGITECH Harmony Machine HM4
I've Had this machine for a good number of years, in a non smoking studio. Adult owned, and has always been rack mounted. It works fine, no hum, buzz, or static. I've used this for processing samples and loops once in a while, and making silly vocals. Great for Guitars or string instruments.
I dont have any manuals to go with this, but its pretty straight forward to use. use the up down arrows to find the pitch you like.
feel free to email me with any questions