Digital Music sounds too bright?

Ok, so I noticed with a mid fi HT/2 channel system that putting a blanket over a 55" flat screen noticeably improved 2 channel soundstage for both analog and digital front ends in purpose built room. Soundstage with analog front end clearly better than internal DACs for Arcam receiver. Add an external DAC, soundstage improved sans blanket. Add external linear power supply? Better. Add good power cable for LPS? Better. With all these improvements in digital front end, blanket still helped. Add solid core quality copper speaker cables (21’), soundstage for digital and analog front ends now detailed and continuous side to side. BLANKET ON TV NOW DECREASES SOUNDSTAGE DETAIL. My experience tends to support many of the points made here, yet is hard for me to grasp what exactly is going on. Better imaging from speakers interacts differently with surface between them, and improving direct output crosses some point where blanket actually hinders presentation? Maybe try different coverings (default was thick fleece throw). Can see rabbit hole from here.

kn

Yes. One interesting thing about this particular discussion is that the changes I introduced in my digital front end that resulted in the described improvements to soundstage (and in basically every other attribute of sound) were done in effort to implement some of Steve's basic approaches in his excellent designs that I have have been reading about in other Agon threads and on the Overdrive website. Particularly focusing on improvements to power supply and management.  Would definitely like to hear one of Steve's DACs at some point, and see photo of the defuser for TV screens described here.  I very much appreciate Steve's input here and on this site in general.