That’s the question… The Kosmo Specification says “-5V to +5V typical” even though the 1222 puts out the 3340’s 0 to x volt signals (where x is 4, 8, or 10.5) unaltered. The Kassutronics VCO 3340 scales and offsets them to zero centered 10 Vpp outputs, as does the T. Henry VCO Maximus, and the MFOS VCO has similar outputs. So it depends on what you use.