The dobro is an acoustic version of a steel guitar played with a bar in a similar style, but without the pedals.
Yes, I work in a studio.
Most steel guitar players can tell you what works best for their sound. If they have a rack of effects, just come out of that, or mic their amp up close with a Shure SM-57 or a good quality condensor mic. Don't use the board eq. "Clean" is what you're going for.