I suggest the usual double-blind listening test, but, generally, people who are deaf are disqualified and you can't see the prepros when blindfolded.

Quirk, schmirk. When I mash down them buttons, sound comes outta them speakers. Very good sound, at that. Every time, for 5 years, or else.

Put a bag over it's head and it looks like Gwyneth Paltro.

Sometimes it pays to be crass.