The SoundFont 2.0 format was standardized in 1996. It decouples the audio samples from the playback hardware, allowing users to load custom soundbanks into compatible sound cards or modern software samplers (VSTs).
If you prefer the original hardware for the most accurate sound, you can find used units on secondary markets like Roland SC-88 Pro: A Classic Desktop Synth! - Sound Profile 3 Oct 2018 — Roland Sc-88 Pro Soundfont
: It includes over 1,600 high-quality sounds and 63 drum kits, covering almost every musical genre. The SoundFont 2