I'm pretty much decided on getting the Electro Harmonix Big Muff Pi and Bassballs pedals, but since I live in a pretty remote area I won't be able to have a look at either of them first. I've heard quite a few things about the power sockets on these pedals; I gather they're an odd size, and perhaps have a non-standard polarity? What's different about the ehx sockets? Where can you get adapters for them (I'm in the UK)? Any differences in the US and Russian models? I'm an electronics newbie!