The S-YXG50 (Soft Synthesizer Yamaha XG 50-voice) is a software-based MIDI synthesizer. Unlike a hardware sound card (like the legendary Sound Blaster Live! or a Roland SC-88), the S-YXG50 uses your computer’s CPU to generate sound via wavetable synthesis.
For those who weren’t tinkering with MIDI back in the Windows 9x/ME/2000 era, the S-YXG50 (often just called the "Yamaha SoftSynth") was the gold standard for wavetable MIDI playback on consumer PCs. Before Microsoft’s wavetable GS synth became passable, and long before modern VSTis, this was how you got your .MID files to sound right . yamaha xg softsynthetizer syxg50 42314 wdm verified