I have been using Torus Piu's for 4+years.
Torus 20a for rear components,4bsst,Jvc rs-60,Vac pre,Oppo bp,bcd-1,bdp-2,bda-2.
Torus 60a for front amps(2X28Bssts+7Bsst)+one 1812 sub.
Have blown a couple jl subs that were not connected to the Torus a few years back.
These I wouldn't be without and besides the superb protection,I mainly bought them for what a huge difference they made musically and especially dynamically.
Should add the other two Jl,s that were connect to the Torus were fine.
Have replaced a preamp,bluray player,the Torus(s)stay as they are that good.