Another duh! moment for me. I use my cd/sacd player as a DAC for streaming. It has filter settings (FIR1, FIR2, SLDLY1, SLDLY2), and upsampling options too. I ASSUMED, or just never thought, about whether or not those settings were universal on all inputs. They’re not. Now that they are being utilized for my streaming input, I feel a slight improvement has been wrought. Soundstage depth appears deeper, if that’s possible, and bass better defined.
Therefore, I will need to reevaluate this experiment.