I tried it on IP sus, and it worked but I don't think his shit is really sus but it did work. and also i tried it on some of my friends sus and it did not work it was niles. I think I ip's just fell out of solution because his is homemade.
A more relaible test is to shove the amp in your ass for a few days and if it does not break it is real stuff! Also, if the amp falls out just re-insert.