i plan to purchase a pair of infinity p163 speakers. they are like the 162 but in a black color instead of silver. they have a sensitivity of 90db at 2.83V so it is pretty efficient. i am looking for a cheap amp to power the pair to maybe 70 db or 80db at max. any recommendations? my price range is 100 dollars but i would like cut back to spending too much. i saw some t-amps for low prices but their reliability seems questionable. I already have an onkyo sr508 bu that will be staying home as it gets hot and is huge and not very space efficient.