Hi guys, A friend of mine has the Pyle PLA4140 hooked up to an infinity sub and infinity components and it great. I am considering purchasing this amplifier. Here is a link for a description of the amplifier http://www.pyleaudio.com/itemdetail.asp?brand=pyle&cat1=Car%20Audio&cat2=Amplifiers&model=PLA4140 The only thing putting me off buying it is the fact that the hz settings for the high pass are very strange. They go from 80hz all the way up to 2.5k hz. Having posted earlier i am probably going to be looking at setting it to 80hz. The only thing i can't understand is who on earth would want to set it to 2.5k hz. From what i have heard only cheap amplifiers have such settings. What do you guys think?