Multiple velocity layers for each instrument, allowing for more expressive performances (softer sounds are not just lower volume, but have a different timbre). Complete GS/SC-88Pro Mapping:
Here is the hierarchy of SC-88 Pro SoundFonts regarding "Extra Quality":
Soundfonts inherently only carry raw samples, meaning they usually include the SC-88 Pro's internal hardware effects (reverb, chorus, and MFX matrix). To truly capture the "extra quality" studio sound: Load your Soundfont into your DAW track.
Games like Doom , Duke Nukem 3D , and Final Fantasy VII (PC version) relied on Sound Canvas modules to deliver their soundtracks. For composers, it was an affordable, all-in-one hardware workstation. Anatomy of an "Extra Quality" SC-88 Pro SoundFont
The sheer size of a SoundFont is often the first indicator of quality. The hardware SC-88 Pro contained 40 MB of PCM wave memory, but today's high-definition SoundFonts can exceed a staggering . This extra space allows for longer, more detailed samples and multiple dynamic layers, which are key to reproducing the expressive power of the original.