Yes, being a musician and/or hearing a lot of live acoustic music is a big plus. You get very good at hearing timbre and dynamics, particularly as a musician, since you're responsible for making it happen.
I have know several non-musicians that developed very good ears, so it's not exclusive to musicians, but they do tend to listen to live music also. In all my years as an audiophile I only met one person with really great ears that I trusted that claimed that she'd never been to a live concert. She'd been in audio as a dealer for over a decade when I met her. I think someone helped her build a very good first system (it included big electrostatics -- Beverage, anyone remember those) and by using that as a reference she then got to where she could pick between various lesser products. I consider her the exception, but I'm certain, based on her experience, that it can be done.
Dave
I have know several non-musicians that developed very good ears, so it's not exclusive to musicians, but they do tend to listen to live music also. In all my years as an audiophile I only met one person with really great ears that I trusted that claimed that she'd never been to a live concert. She'd been in audio as a dealer for over a decade when I met her. I think someone helped her build a very good first system (it included big electrostatics -- Beverage, anyone remember those) and by using that as a reference she then got to where she could pick between various lesser products. I consider her the exception, but I'm certain, based on her experience, that it can be done.
Dave