My friend's got an infinity perfect 10 sub and was wondering which specific model to go with that will be suitable to power that sub. Thanks

 

Any amp that puts out about 300 watts into a 4-ohm load (assuming he has a 4-ohm version of the sub) will be good.

 

Those subs are rated I believe at 300w rms but Ive seen them handle a sh*t load more. My vote would go towards an amp that does 400wrms constant.

Depending on how much you want to spend, MTX Road Thunder makes some affordable quality amps, also check out Alpine. Those subs are very accurate and clean, so you want to find an amp that puts out quality, clean current.

 

A perfect amp for that would be an ESX Quantum Q1752. This amp would deliver over 500Wrms bridged to that sub. It's available for $265 shipped at Ampmanaudio.com. I've used one and sold about 10 units to customers last year and they were all very happy with this amps performance.

Other brands to consider would be Phoenix Gold, MTX, Memphis Studio series, DEI Directed Audio, Crossfire, Rockford Fosgate, Orion XTR series, HiFonics Zeus and Generation XI series and US Acoustics. These brands are offer some affordable models and you'll still get excellent quality.