Hey I bought the polk monitor 40 speakers while they were on sale. I was looking to buy an amp or receiver etc. and I can't decide whats best to get receiver, integrated amp,pre amp, etc. All i want to do is listen to my music as best I can. My music source is a computer but mostly an iPod I know I know not the best but that's what I got. So basically what system should i buy for good music. This is probably a dumb question but I can't decide whats best.