This is where I went. Professional install external to the box by my longtime electrician. Doubtful it is the only solution, but it is a solution.
Surge protection
My apartment recently had a serious power surge. To my horror, a few pieces of equipment were killed! Aurender was great for repairing my N100. Still waiting on the status of my Walker precision motor drive and Meridian Headphone amp.
It’s been my understanding that surge protectors degrade the sound of a high-end system. But going forward I feel I would be foolish not to put surge protectors in front of my expensive equipment.
I would appreciate any advice about what works without sound degradation,