Hmmm. Being self taught, I've never been shown what to look for in acoustic characteristics. Not sure what I'm hearing but when I play the "b" on the "g" string and play an open "b" they sound like the same frequency but the characteristic of the sound is different. I should really get together with a seasoned acoustic player as this is my first, to me, high end acoustic and would love to learn more about what makes it special. My last acoustic, 214ce, was just something I thought sounded good for the price and I just played when an electric wasn't convenient.