A "Karman Line" lo-fi delay and effects pedal with the amazing and confounding joystick. (You have to get this thing hooked up to believe it. The sounds you think you want are elusive, and the sounds you didn't know you wanted land in your lap.) Very nicely made. Ididosyncratic of course (it's from Hungry Robot). I love it and yet it overlaps (in some ways) the Wardencliffe pedal I have (also Hungry Robot) and so something had to go. <BR> This pedal does more than you might think, with features like a latching footswitch to lick into certain effects. And the Mix and O (for oscillation) Mix? Here's what AI says: The Mix and O. Mix are two separate volume controls for different operating modes. They work as an automatic override system so you don't blow out your ears or guitar speakers when things get crazy. I recommend going to the Hungry Robot site for great help links. A hard to find pedal. Great condition…mint except for a very small scratch on bottom as shown. Pictures are actual pedal.