I don't really understand how that works. The device will allegedly handle speaker level up to 3000W, and presumably instruments as well, but no switch... so does that just happen dynamically based on impedance at the input jack or something? Mysterious. Anyway, we'll know in a couple of days when it arrives. I'll post my results here for the benefit of the other cheapskates LOL.
I believe the correct term here is "automagically " I can't stay completely understand this but it seems to make sense to me and I believe it does filter or step down the signal