So, the side-by-side sound check of the two ukuleles. EDITOR'S NOTE: The first recording had some problems, so I've redone it, made it shorter, and gone back and forth with the comparisons, which should make it easier to hear.
First, the excuses: It has been nine weeks since I got the mahogany ukulele, so my playing is, um ... well, the word "crappy" comes immediately to mind. So if you listen to the comparison samples, you'll note some buzzes and clams. Then again, I play them both equally crappy, so that balances out. (Actually, I might play the cheaper one a little better, such as that word applies, since all but a few days of my practice has been on that one, the new one having only come home to live here two days ago, and you do get used to the instrument you use the most, but for the purpose of this exercise, let's call that a wash.)
So don't listen for expertise if you listen, see if you can tell a difference in the tone. I can say that the koa is easier to fret and barre, because it is set up with a lower action and it sounds better to me, but I am subjective. Even if I were blindfolded, I could tell the difference in the feel.
Since the experiment is a single-blind, in that you can't see which axe I'm using, sound is all you got.
Have a listen: