You can import audio data from your computer into the SP-404MK2 as a sample.

Audio file formats that can be imported into the SP-404MK2 are as follows.

  • When importing from SD card: 16-bit linear; WAV, AIFF, MP3
  • When importing with the SP-404MK2 App: WAV, AIFF, MP3, FLAC, M4A (ALAC, AAC)
  • Use the macOS version of the SP-404MK2 App to import ALAC or AAC data.
  • In some cases, it may not be possible to import files of an extremely short duration (shorter than 100 ms).
  • Filenames that contain double-byte characters may not display correctly.


  1. Drag and drop the sample files from your computer to an empty pad on the SP-404MK2 App.

    The popup message “Working...” is shown. If you decide to cancel the import, click “Cancel.”

    You can also select multiple samples, and drag and drop them to empty pads.

    Never turn off the power or disconnect the SP-404MK2 while the screen indicates “Working...”

    When you drag and drop a sample to a pad that already contains an assigned sample, that pad’s sample is overwritten. Use caution, as this deletes the previous sample.

    When the import is finished, the pad of the imported sample turns white.