grapeflavor wrote:...Serious question: How similar are the 2 overdrive methods?
From my personal experience, having heard all three, they're all behaving differently. The internal (or external) process is essentially the same: overdrive the filter and VCA with the output signal, by creating a feedback loop. But since all three machines are somewhat different in design and implementation of the circuitry, the results are also different. All interesting, mind you, but definitely different.
Especially when the circuitry is on the verge of self-oscillation (audio feedback) on both the Mini and Voyager, the behavior is very noticeably different between those synths.
The Little Phatty filter overload levels, don't allow self-oscillation if I remember right...