The only way to tell the brightness is (only) from the digital source is to try an analog source like a turntable. But aside from room treatment, I felt both my streamer and my DAC sounded less "digital" when I upgraded the power cords. Incredible value $69 Signalcable cord. Highly recommended.
Digital Music sounds too bright?
If you feel your digital sound is too bright - I suggest you place a lightweight blanket over your tv screen or computer screen, if you have it placed between your main speakers. I did this and immediately heard a less edgy sound and improved separation between left and right channels. I have a 55 inch screen between my mains (Tyler Acoustics). This easy and free tweak made a noticeable improvement for me. Hope it will for you too.
(It makes complete sense that this will reduce some reflected sound. No one would ever recommend placing a mirror or window between main speakers, but a screen has the same effect. If you have a coffee table in front of you when listening, it also could reflect sound that undermines your speakers. Try covering it or moving it away).
(It makes complete sense that this will reduce some reflected sound. No one would ever recommend placing a mirror or window between main speakers, but a screen has the same effect. If you have a coffee table in front of you when listening, it also could reflect sound that undermines your speakers. Try covering it or moving it away).