The only time I saw damage from lightning was a couple decades ago. Computer terminals connected by hardwire to servers were getting destroyed following lighting storms. The hardwire data connections were the path for the induced potentials. We specified inexpensive lightning protection devices on the data lines ( they were around $50 per unit) and never lost another terminal. It has been a while and I cannot recall the name of the company. However we went for the fastest protection, the down side was that the fastest protective devices gave up the ghost in doing their duty, which a few did. But at that time a computer monitor was going for $500 so the $50 loss was acceptable. Lightning usually gets coupled via a path other than the power lines, i.e. a cable, antenna, etc. But it certainly can come in via the power lines. Suggestion is to find a device that does nothing but protect against lightning, whose primary selling point is speed, and that is not designed specifically for audio equipment. In general you will get a better product of that type by staying with industry standards for protection of data equipment. Try any large company that sells markets the protection for computer systems. Preferably one that can be purchased either direct or through one of the large electronics distribution houses. I am a little suspect of the stuff designed specifically for high end audio and sold by high end audio marketing - just too small of a market and too riddled with overpriced gimmicks. If the industrial quality products don't do what they promise, the companies don't last long, so their is a little more assurance of the quality of product if the manufacturer has been at it a while and has a business clientele.
