The original Alesis D4 had a hot analog output stage that would subtly saturate. To replicate this after your soundfont:
If you are searching for a "Soundfont" of the D4, it is likely because you want that classic Alesis sound inside your DAW (Digital Audio Workstation) without buying the hardware. Soundfont Full Alesis D4 13
This SoundFont is a user-made sample library that faithfully captures the D4’s gritty, compressed, gated-reverb character. The original Alesis D4 had a hot analog