"almost all" probably counts a lot of phones, tablets, and "devices" with minuscule, minimalist speakers that cannot produce non-distorted sound at any loudness

"almost all" probably counts a lot of phones, tablets, and "devices" with minuscule, minimalist speakers that cannot produce non-distorted sound at any loudness no matter what the volume setting is. most people don't care. they may or may not be able to perceive a difference. they want a "hear better" knob and this is what they have so they assume that's what it is.