The samples that were loaded in the SP-404’s memory when it was new are no longer there. How can I reload them?

I've connected a CD player to the SP-404's LINE IN jacks, but the sound is sometimes distorted. The distortion occurs even if I lower the EXT SOURCE level so that the PEAK indicator does not light. How do I eliminate the distortion?

Which brands of CompactFlash cards are compatible with the SP-404?

Can the SP-404 play WAV or AIFF audio files that I’ve copied to a CompactFlash card from my computer?

On the SP-404, can I apply internal effects to the internal mic or sources connected to the LINE IN or MIC jacks?

On the SP-404 / SP-303, can I change the length of a sample while maintaining the original pitch?

How do I check the remaining battery capacity of the SP-404?

What can I do using the SP-404's Resampling function?

The SP-404 is equipped with an internal mic for sampling. Is it possible to connect an external mic and use it for sampling? Can I use a stereo mic in this case?

Is there data compatibility between the SP-303, SP-404, and SP-606?