SoundFont
to PropellerHeads Reason NN-XT Translation
Translator takes each SoundFont Preset OR Instrument (you can choose in the Format Options - SoundFont tab, or in the Master Translation dialog) and creates a Reason NN-XT file (.sxt) for each one.
This destination format supports Stereo Samples, while source only supports mono samples (placed hard left and hard right to simulate stereo). See Stereo Sample Support for more information on how Translator combines these into Stereo files.