My problem here in Florida was that the local utility would have issues causing frequent drop outs of service that would scramble my DAC/Server requiring an annoying reset sequence to restore operation. Rather than experimenting with surge / transient protection, I took the entire front end off line with a StromTank battery array. Now the utility can do their worst and my gear happily plays on. This is an expensive solution but not when you consider the potential damage that you avoid.
Cincy