There can be a shortening of capacitor life with each on/off event. As with most things in life… lunches are certainly not free.
I did have the unfortunate experience of sending a full volume “digital noise” signal thru my system which resulted in needing to replace the brilliance controls.
I was a bit surprised that they are Dayton Audio Units. The bias controls are simple devices. These speakers are robustly built.
I sent my backplates in for a little custom work and updates. The one thing I has them do was replace the A/C plug with a high quality locking plug. And “better” speaker terminals.
Making sure you keep the speakers from crackling with the bias controls is really the only housekeeping you need to do.
I need to keep mine set fairly low….