I finally got one (with Red Knobs), and it kicks ass. 
The only problem is that it’s used (no manual) and I’m not exactly sure how to work it. It has an effects loop, but right now I’m just plugging my guitar into by Big Muff which goes into the Wah, which goes into the amp (input one for channel switching mode). I don’t know if this is gonna hurt the amp or what…I’m kinda at a loss.
In addition, I can’t get the reverb to work (ie, when I hit the footswitch the light goes on but nothing happens). There is a 3 way switch next to the reverb knob that says: Channel 1, Both, Channel 2. I’m not sure what I’m doing wrong, I just had it fixed so I’m pretty sure the reverb isn’t ‘broken’…or at least I hope it isn’t.
Thanks in advance for any advice.