from lodigy web site epsi user manual"

5.1. SD Card and File Format
The EPSi handles SD Cards formatted with either FAT16 or FAT32 file systems.
Inserting a card with a different format will trigger an error message. SDHC
Cards are currently not supported.
Impulse response files are 44.1 KHz Wave Files with either 16 or 24 bit depth.
Trying to load files that do not match this specification will trigger an error
message
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"May you be Blessed and our Lord Jesus keep you"