I just built one of these for Brian Southall (The Receiving End of Sirens, The Company We Keep, BOYSNIGHTOUT, fordirelifesake)...Um, not the most fun build.
Super small area the solder in. Really awkward angles! I got a few nice burns on my hands and wires haha.
The unit is solid though...just sucks to build.
If you're going to buy one, definitely just do the
www.loop-master.com route!