I have not checked the voltage but I don't think that is the issue due to the fact that hifonics amps don't give out that clean of power and I know its clipping because I have the gain at about 40-50% and when I put the volume to about 45out of 62 the sub clips horrible like it's definitely noticeable you can hear it making a horrible noise and I know this sub can take every watt of this amp with ease. I know I get what I paid for but man did I make a mistake slacking on the amp because my friend has the same sub on a 1000 watt jl slash and it sounds soon much louder and cleaner I'm just undecided on Wich high end amp I should buy I just don't want to spend over 800 for the amp I am open to opinions but one thing I am for certain is hifonics is garbage