Respectfully - there is nothing "daft" about switching any of the 6 stereo tracks to mono. After converting the 6 stereo tracks to mono - the DP-24 is essentially a 18 MONO track recorder. It's this simple:
1) create a new song - make sure that the bit rate and sample depth match that of the tracks your wanting to import
2) press the "Assign" button to enter the Assign screen and simply toggle down to any of the six stereo tracks... and select the one(s) you want to convert from stereo to mono.... then simply press the "st/mono" button
3) then import the .WAV files using the "Audio Depot"
Bottom line.... YES - you can do what you're wanting to do.
As far as SD cards... one of the KNOWN aspects of these recorders is that they are finicky about which cards will work smoothly and trouble free. It is highly recommended that you use the cards that Tascam/Teac recommend.
If you've got a bunch of song data on a 128GB card... just move that data to a computer and load the songs onto the DP-24 card as needed. This is a safe way to operate, anyway.
I've been working with the DP for years now and deliberately keep just one, two, or maybe three songs on the card at a time. It's good practice to safeguard your song data this way. I rarely pull my card out and simply use the USB link feature to move data back and forth.
One last thing for this post: The single most important thing you can do for yourself once you purchase your DP-24(SD) - is too watch this tutorial series. *ALL* will be clear with Mr. Tippings outstanding series of videos. He also offers an *excellent* .pdf how-to manual for $40.00.
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