I haven't used the maudio, but the vs100 sounds fine. The conversion is great - at the home studio level you probably aren't going to tell the difference between the two if there is any - or even higher end units. I couldn't tell the diff between the roland unit and my tc konnekt, which is a midlevel unit.
Premaps - obviously not as good as outboard units (An api unit was obviously better during testing but costs about as much as the entire vs100 so it ought to)but has a goodly amount of gain and is clean. I didn't like the dsp compression/gating, but I didn't muck around w/ it as much as I should have. But again, I have outboard for that so didn't feel the need to.
Overall, I'd have no qualms about the vs100 soundwise. If you can't get it to sound good it ain't the hardware. And really, there isn't (and shouldn't be) a spit's difference between the units soundwise. But the real draw of the vs100 is as a location recorder and the fader. If you can get by w/ 2 preamp ins and 2 more line ins it is a fine unit.
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