For its sound and build quality, and the unique synthesis method it featured, the D-50 has remained popular to this day. Its synthesis engine, in more or less updated forms, was used in Roland's JV and XP series synths, among others. Furthermore, in 2004, Roland released a VC-1 expansion card for V-Synth and VariOS synthesizers. It contained a modeled and updated D-50 synthesis engine and the original operating system, including factory- and all Roland "expansion cards" patches. Since the newer DAC chips sounded "cleaner" with less noise output and overall higher bit and sample rates, it included the option to simulate the D-50's "rougher" output.