Not long ago I took a short trip in a small Cessna (I think it was a 152). The audio quality in the headphones wasn't any better than what I hear on those ATC YouTube channels. I didn't understand a word of it (well, that's not quite true, I understood some words here and there; not nearly enough to be able to safely fly).
A Cessna 152 is not an airliner, obviously, but I would think audio quality shouldn't differ all that much between them.
A Cessna 152 is not an airliner, obviously, but I would think audio quality shouldn't differ all that much between them.