The Morley ABY Channel Switcher is a simple A/B box for use in the studio or on the stage. It's a simple pedal, with 1/4" connections for the A & B channels as well as for an input/output jack. It then has two buttons - one for choosing between the two channels and one for using both of them at once. We've got two of these boxes at the studio where I work, and they get used for a variety of purposes. The main use for this around the studio is for sending a single guitar to two separate amplifiers, which is great for both stereo guitar recording and for switching between two different amplifiers at the push of a button. It can also run the other way if you're looking to run two different signals into one. Another recent usage I had for this was for a talkback microphone inside the live room. I hooked up a mic into one end of it and had the other end open, giving the players in the live room a chance to switch on their talkback when needed to speak to the other players in isolation rooms. This isn't exactly a traditional usage for the Morley ABY Channel Switcher, but it's valid nonetheless and to me really outlines the versatility and flexibility you get with a box like this. To me this box sets itself apart from other A/B boxes simply by being sturdy and super easy to use. There's absolutely nothing on here that you won't be using each time you use the pedal. It's also not very expensive for what it is when you compare it to others like it. It's probably not the cheapest, but more times than not it's going to be worth it because it's such a solidly built box...