It appears there must be some sort of EMI or RF emission from the P20 display or the Toroidal transformer directly below it. Luckily it appears one can trim the 3Ms AB7050HF absorption sheet to 3.75 inches by 7.75 iinches and significantly improve the P20s listening enjoyment factor. The placement must go back edge i alignment with fourth cooling fin left and right and trimmed to forward edge if the front cover. Too much of the material on the top cover is not as good of an effect as limiting it to 3.75 inches. Proving there can be ttoo much of a good thing.
What does it do to the music? It allows the system to expand the soundstage in both width and depth.
I used the Roger Waters much rope song because of the 3D background details. I imagine DSOTM or most other Pink Floyd songs just apparent.
The wood splitting at the beginning, thwacks of the splitting axe and wood tearing apart and falling to the ground, sound truly real to life. The horse drawn sleigh with bells is also more life like and apparent cutting slowly across the soundstage and the horse neighing. The race car is completely ripping from left to right with new found realism.
The affects on normal voices and instruments in regular songs without 3D effect are just as apparent. Now if I only knew the best way to get the top cover off the P20. Hopefully it doesn’t require flipping it. The 3M absorber sheet already comes with adhesive that is peel and stick. PS audio needs to incorporate this material into the Bill of Material on the P20. If you buy sheets in bulk. The sound improvements are that transformative and literally jump out at you.
Here is the link at Digikey to buy and try it.
https://www.digikey.com/en/products/detail/3m/AB7050HF/2213528
I have enough material to make one more or you can order and try for yourself. This is way cheaper than a cable if you have a P20 and more transformational than spending thousands on more cables for much less subtle improvements.
I cropped the photo of a P20 to show area of placement. Perhaps an engineer like @tedsmith or @DarrenMyers who knows RF and components spacing can figure out what is noisy and needs fixing in a cheaper manner or tell us why this tweak works so well. Or if someone has equipment that measures the noisy sources.
