Here's what Kala says:If that were they case they'd all be solid-bodies, but mine had a sound-hole:
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ICYMI I also tried the Parlor bass with metal strings & I still couldn't hear myself.
From personal experience, I would say if you're in a quiet place, you might hear it well enough to practice. I think my solid body bass guitars are just as loud acoustically.
Most ABGs aren't really loud enough acoustically either.