I have always had some form of line condition/surge protection for over 15 years. If you equipment does not come with its own internal protection circuitry that will protect it from power surges, most insurance policies will not pay for damages. I have an insurance background. My Mark Levinson 27.5 had its own internal protection. That being said, even the mighty Mark Levinson benefited from Adcom ACE-515 line conditioner 12 years ago. My current tube amp Music Reference RM-9 100 wpc. Built by The Roger Modjeski, he does not recommend line conditioners as his amps are " line voltage" tolerant and do not need surge protection. When I unplugged my RM-9 tube amp from the Shunyata Hydra 4 it sounded way better, or should I say more dynamic with better soundstaging. My Wadia sounds better plugged into the Shunyata. So I would agree with the earlier post suggestion that you should borrow one and see for yourself in your system. Then consider if you can afford to be without protecting your gear if there is a lightning/then power surge like the one that destroyed my Proceed Unit. That just happened not to be plugged into the Adcom ACE unit.