I now have Puritan filters on both of my systems. Without question, both units improved the clarity of each system. I am plugging my amps directly into the Puritan, along with all upstream components.
When funds allow, I’ll purchase the ultimate power cord and see how that impacts my primary system as a test.
I guess it is system dependent, but do want to report I am a happy customer. My enjoyment of music has gone up since adding the 136 (first) and now 156 device.
If anyone is curious and wants to get more details, hit me up on PM.