I think it makes sense. I have a Panamax MR4300; same company as Furman. Generally speaking you shouldn’t really notice any improvement in sound. Meaning, if the change in sound is more than subtle there is something else fundamentally wrong. The benefit is primarily to your equipment (efficiency, protection, etc.) and secondarily to your ears and peace of mind.
Furman power conditioner on SMPS amps?
I have 2 smps class ab studio monitors (12w each when playing music) and a linn ds streamer with smps. Does it make sense to use a furman ac215 on them - in regard to sound and protection from over voltage ?