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The default format is the "Binary" format, which writes the data to a flat binary file of int16s in the form "ch1 sample 1, ch2 sample 1, ... ch384 sample 1, ch1 sample2, etc." There are separate files for the AP band (30 kHz) and LFP band (2.5 kHz). We recommend using this format because it's efficient and directly compatible with Kilosort. Events are saved in the 'all_channels.events" file. More info on the format can be found here. (The "neuropix-2" version of the GUI uses the same binary format as the master branch of the GUI). To convert from the stored int16 values to microvolts, simply multiply by 0.195.
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