Up for sale is my Payne-labs K-Switch.
I bought this MIDI switcher earlier this year for a rig I put together. This unit is just plain awesome! You have four effects loop in groups of two. This mean that you can use the first two effects loop to have, for example, an overdrive pedal and a pre-amp boost pedal and have those to going in front of the amp, so now you have your overdrive for that pushed sound on the clean channel and then you have your boost to push the front end of the crunch channel and get that singing gain tone. Then, on the second effects loop section you can have delay and modulation pedals going into the amp's effects loop. And then you have four relay switches to control any amp function such as channel switching, reverb, effects loop, or whatever you may need.
This is really a one step solution to automate most any analog rig out there today. It is very easy to program as you send the MIDI program change, set the switches on or off, and the unit will learn it so every time it gets that program change it will go to those settings.
All and all, a very versatile and useful unit.
The unit is in really good condition and everything works 100% perfect. There are a couple of scuffs and light scratches. I had removed the rubber feet as I had the unit tie-wrapped to the side of a rack but I will be including the them in case you want to use them.
Here are the features:
8 total functions: 4 footswitch functions and 4 effect loops (2 chains of 2 loops)
128 patches using MIDI program change commands
Instant access any function with MIDI controller change commands
Footswitch functions can be grouped together for amplifier channels (only one active at a time)
Ground lift switch for one of the effect chains
Easy to program and use
Size: 4.7" x 7.4" x 2.2" (Hammond 1590D enclosure)
Shipping only to the lower 48 states in the continental US!!! 
