Roboverb’s Interstellar Inner Workings…. Roboverb is a simple Schroeder Reverb containing 8 Comb Filters and 2 All Pass Filters.  These types filters create the basic echoing/reverb effect heard in many simple reverbs.  The switches you see in the UI toggle each filter on or off.  By doing this, you get a nice robotic/mechanical sounding effect.