Quote Originally Posted by markw
They won't give your amp any more power. They will just allow you to max out it's capabilities at a lower volume setting on the receiver.

To wit: you may wind up clipping at a level below zero if it's turned up too high.

...kinda like adding an "11" to your guitar amp.
It will give you more volume to even it out with the rest of your source devices. Works perfect for me. Not everyone uses 10 on their controls and only Spinal Tap uses 11.