[Cocobolo Kid]

Running a separate dedicated circuit from the breaker box will give you the cleanest power for your audio devices.

Less expensive solutions would include putting your computer equipment on a UPS (uninterruptable power supply). Unless you are using a laptop, you should have your computer connected to a UPS anyway to avoid file corruption or loss of unsaved work in the event of a sudden power outage. Connect your computer and monitor to the "battery backup" side and connect the printer to the "surge only" side.

To isolate your audio equipment further, you can try a good power conditioner from the likes of Furman, etc. I use a Torus power conditioner that provided better results than a high end Furman.

Good luck.