There were some really interesting comments here, but I suggest that this stream be redone, as I have no clue as to if the things being referred to are for the Alpha-Stim, or the Fisher Wallace device. I know that Alpha-Stim supposedly has patented their square wave signal. And they differentiate themselves in their literature, with some apparent basis, as they seem to have more studies involving their device(s) than Fisher Wallace.

I ended up here, because I own an Alpha-Stim (M model), and I got the M model as it was only moderately more expensive than the plain Alpha-Stim, and with all of the things coming out about NSAIDs, I thought that having an alternative means of pain relief could be a good idea. I currently have hip replacement surgery scheduled, and was wondering about the utility of the AlphaStim M in that context.