I don't consider myself an audiophile and I'm sure they'd scoff at the Klipsch speakers I have hooked up to my HTPC and home theater. But even then, listening to the Ultra HD selection on Amazon Music and 4K Blu-Rays as opposed to streaming, there's a noticeable upgrade in sound quality. I think you'd be hard-pressed to get anything close to the same level of sound out of headphone speakers or even a soundbar just based on the relative sizes of the speakers.

Of course, like I said, the true (and wealthy) enthusiasts would probably look at my setup and laugh, because there's always more money to be thrown at something like that.