Other than a decent Triode Wire Labs power cable, would the L2 need a power conditioner or more elaborate surge protection? I have whole-house surge protection already installed.
I'm on a plane to RMAF now (with sketchy wifi):All
the L2 components have built-in MOV surge protection. I actually have a customer who took a power surge during a storm, and it worked as it should (blew the fuse of the L2 Preamp, but no damage was done to the unit). Of course if there is a lightning strike very close to your home, there are no guarantees that any
surge suppressor will save your gear. I am sure you can find surge protection units that have even more protection than what I add into the L2 components. But I still recommend unplugging your equipment during an electrical storm if you are home. It might be a tad inconvenient, but having to send your units in for repair is much more inconvenient (for us both) and expensive.
It is hard to say if you will find any benefit with using a power conditioner. It really depends on how polluted your AC mains are, and the design of the power conditioner, etc:
At home, I plug all my L2 components directly into the AC outlet (no conditioners) and have no interest in adding a power conditioner because everything works and sounds as it should to me. But I do understand that some customers have polluted power and want to clean it up. As jriggy mentions, see if you can borrow a conditioner. If not, I recommend that you try power cables and conditioners from companies that will let you demo them at home, or offer some sort of return policy. Then you can swap them in and out and decide if they are making an improvement. And do you find the improvement to be worth the cost to you?
What is essential
to make sure your outlets are wired correctly (Live, Neutral, and Ground are all wired correctly), and your power cord has a connected Ground wire. Never use a cheater plug. You can buy an outlet tester for under $10 at your local hardware store (electrical department) and test your outlets, just to make sure everything is correct.
I hope this helps,