Hi, I'm selling this a/b box. It is 2 in, 1 out. The top switch switches between the two in's, the bottom switch is a mute switch. The top two led's are blue/green. The mute led is red. It works great, hardly used and is powered by a boss 9v adapter. It does not take a battery. Will add cash and trade for a chorus or delay pedal. $40 shipped. **also, the lines drawn on the pedal are in pencil. It is freshly built.