Usually statements like these are made by people who do not like tweaking. So they make something silly up. The power supply in that amp is way away from the back panel. The power supply (a switching one) is completely self protecting......it shuts off if there is over current/over voltage, too high of temperature, DC offset, etc.. Also there is a fuse on the power supply. There is no "fire hazard".....same with having cotton covered wires inside. If you don't understand or like something....then attack it......the ego says. The heart says....what does this do? Maybe I don't know everything. Maybe I should keep my mind open till I have tested this with my ears.