//content.invisioncic.com/y282845/emoticons/word.gif.64b12e39f936af3b4fff38a1c0bd0244.gifMost computer power supplies won't provide enough current to power an amp.
well, the PSU I have hooded up had dual 12V rails, totaling 58A. $45//content.invisioncic.com/y282845/emoticons/word.gif.64b12e39f936af3b4fff38a1c0bd0244.gifAnd in most cases a 12v power supply that is capable of providing the amount of amperage you'd want to run an automotive amplifier in your house is going to be a bit pricey.
I paid $100 for my 35a power supply and $155 for my 50a //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif and neither of those has near enough Oomph to run a big monoblock at full tilt. They're big enough for testing purposes to verify functionality but you wouldn't want to try and really wang on 'em or (best case) the overdraw protections would kick in or (worst case) the power supply would burn up trying to provide an amount of current it simply isn't capable of making.
computers run off of DC, the power supply converts the power....I don't really know but, don't you need DC to run an amp? And your house puts out AC, right?
dunno, I think you can with similar ones, but I have no idea...can you get a whole bunch of [power supplies and strap em?