^ Based on several e-mails with SD, there are definitely two gain stages: 76 dB at the pre and 20 dB at the fader. They weren't super specific, but my interpretation of their responses is that the pre gain is analog and the fader gain is digital (or, at least, mostly so). In custom mode, with basic gain, they confirmed that it is a mix of the two stages, but wouldn't say where the digital portion kicked in. They did say that, due to their pre/ADC architecture, the analog and digital gain would be indistinguishable both audibly and visually (on the waveform). Not sure if that helps or not!