I have the SM-1's for my rear channel and center. They have been driven by Sunfire, EAD, and now BAT amplification. Dunlavy are fairly effecient, but the beauty of Dunlavy speakers are that mirror what is going through them, no coloration, etc... You put cheap on bad cables in your system, Dunlavy let's you know. This is also why you can more easily seperate the bad recordings on many of your CD's. NAD and Rotel would both provide cleaner amplification. I have more experience with NAD and find them a great value. Good luck, don't let go of those Dunlavy's.