I will be using my harman kardon AVR-525 receiver with signal from a Denon DVD-2900 for SACD/DVD-A media. I have no plans to buy an amp. I listen mostly to Jazz, Blues, Classical and some Rock. I like the SR60's except they are a little bass thin. Will I be able to tell the difference between the 125's and 325's without an amp? Would the 225's be a good compromise? Any suggestions?