Originally posted by e1618978
Your ears are a better tool for this purpose than an oscilloscope.
. . .
And bigger often means better -
I didn't really want to get into this, but I did at least prove that an audiophile in the audience thinks bigger is better. I could tell why you're wrong about tubes ("my ears are better than science" is a bullshit argument) but you wouldn't listen anyway, so there's no point.
Getting back to the topic at hand . . .
You can't deny that in an age of miniturization, the Blu-ray players are un-necessarily oversized. When the whole thing is running very low power VLSI digital components, there's not a whole lot of need for radical EMI shielding or super-clean power. The audio from a Disc is MPEG encoded, so the only place where any sort of clean power is needed is the link to an analog A/V receiver (if you actually use it instead of the digital output), and it can be independently shielded, grounded, and powered. I doubt it's more than a 150mA draw. . . and that's a very generous estimate.
Really, the only people who pack boards full of discrete logic these days are music people, partly because they need to deliver a lot of power, and partly because they don't know better. I guarantee these players are full of empty space.