It depends on the amp and how much instantaneous current it can draw from your outlet. Some amps need a lot of current while others, perhaps switching amps, need less. I didn't notice any difference when my Bel Canto M300s were plugged into my surge protector. And, some amps, like mine, are very sensitive to power surges and I sleep better knowing they are safe. Its up to you and you can try it both ways.
