Here are some pictures I found Googling them. You just plug them into outlets around your home. My method was to use onion every independent circuit in the home. In some cases I used two in parallel or series on the same circuit. You had various son tuning the circuit doing this. Over time the original PE design evolved but I still use the originals.
I know Alan used to work for a few different rock bands and last I knew he was living in Germany where his wife is stationed. Not sure what is up with him these days.
https://www.google.com/search?q=alan+maher+power+enhancer&oe=UTF-8&hl=en&client=safari&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=PQeDUO6VDYKi2AWTlYHoAw&biw=1024&bih=672&sei=RgeDUKy1D8PO2wWMkIHgCQ
I know Alan used to work for a few different rock bands and last I knew he was living in Germany where his wife is stationed. Not sure what is up with him these days.
https://www.google.com/search?q=alan+maher+power+enhancer&oe=UTF-8&hl=en&client=safari&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=PQeDUO6VDYKi2AWTlYHoAw&biw=1024&bih=672&sei=RgeDUKy1D8PO2wWMkIHgCQ