I had a decision to make a short time ago. Buy a Smash or buy a ready to go D amp. In light of the fact that I had little time on my hands, I chose the other product. It was expensive at $200 (I mean really, just look inside one of these things). It has selectable gain which is useful, and even comes with it's own RJ45 connected speaker cables. But for me, that's where it ended. After hooking it up, I should have not been surprised. It sounded pretty much like the other D amp that I own, and that is not a compliment. Harsh yes, and yet beyond that, not a bad sound all in all. Then I read more closely about the Quicksand. Battery power helps tame the harshness,,,hmmm I got some SLA batts in the basement that were to be used for a Quickie project. This amp requires 19VDC. At 24VDC, am I taking a chance?