Strymon Sunset Dual Overdrive Pedal - UsedSunsets three position Config switch gives you powerful control over signal flow when you stack two drive circuits. You can run whichever two drive circuits you choose in series, reverse series, or parallel, all with the flip of a switch and no recabling. Coming up with great sounding drive and signal flow combinations is fast and easy. Six drive circuit topologies with custom tuned voicing for each drive type Precision crafted drive circuits