Not only do the VCOs go below 30 Hz, you actually have a pitch continuum right on through the LFO settings. After switching to LFO from OSC, run the COARSE tuning up to where it matches (more or less) what you had at the bottom of the OSC mode...then head for the basement! This is super-useful, btw...the ability to sort out scalar intervals in the subsonic and modulation ranges simply by using the keyboard is something majorly important. Ever since Stockhausen's "Kontakte" and the "magic moment" in it where he shows how the scalar continuum extends across the pitch - rhythm gap and then can even make SLOWER "pitches" in the periodic ranges by using the individual pulses to ping a filter, having the ability to simply PLAY that continuum was (and kinda still is!) a big deal.