In my main system I run 5 mark levinson 436 amps through PS PPPs. Never had a problem. Never had an issue. The PPPs do a fantastic job on audio and a fabulous job on video. I have used other products (mostly of the filtering variety rather than the regeneration variety) over the last 20 years and have found that in most cases they have been value added to the listening experience and more recently to the viewing experience. You do have to be very careful, however, to make sure that you pair the components correctly over your filters/regenerators in such a manner as to ensure that you don`t run in into “bottlenecks”.