I just upgraded to a set of 6.5" CDT high def components, from a pair of pyramid 4x6" triaxials. It required making custom mounts and quite a bit of grinding down the stock grills. However, it was well worth the effort. The sound is much improved, but I am wondering if giving them an amp would be that much better. They are running off of my alpine 9813 and sound pretty good. I dont usually turn the volume up past 22 because thats just too loud for me. Will amping them give me enough improved sound at that low-mid volume to justify the cost in your opinions? They take 120rms so I was thinking about a US Acoustics USX2100 which is rated at 100rmsX2 and I believe thats at 12.9V. Also, can I run the speaker wire from the amp to the stock speaker wire behind my radio? That makes it easiest to hide the wire, but I think its only 18 gauge, possibly smaller, so I'm not sure if thats large enough for 100rms.