An MSMPL_BANK file is a data file used by the Korg microSAMPLER keyboard and Korg microSAMPLER Editor/Librarian software. It contains a sound bank, which includes all of the samples, patterns, tempo and effects parameters for an instrument. MSMPL_BANK files are used to transfer a sound bank to and from microSAMPLER keyboards.

You can create, open, and transfer MSMPL_BANK files using Korg microSAMPLER Editor/Librarian. To create an MSMPL_BANK file, select File → Save or Save As.... To open an MSMPL_BANK file, select File → Open.... MSMPL_BANK files can only store one sound bank and the internal storage space in microSAMPLER keyboards can store up to 8 sound banks. If you wish to back up all the sound banks on a microSAMPLER keyboard, you can save all 8 sound banks in an .MSMPL_ALL file.