In my analog-only system, I use what Tvad mentioned, a Brickwall PW2RAUD for both the TT & Integrated. Even though I have dedicated circuits, the Brickwall enhanced the sound a bit with improved clarity and depth. So far, it has also done a fine job of protecting my stuff throughout the significant number of thunderstorms we've had here in the Midwest lately. I've tried a number of other units, such as PS Audio, Tripplite, Oneac and others. The Brickwall seems to do what it is supposed to and doesn't appear to leave any noticeable sonic signature.