This is the spiritual successor to the U-series. It contains many of the legacy PCM waveforms found in the U-220 and U-20, but with significantly more powerful filters and effects.
This library features meticulously sampled factory patches and expansion cards, converted into a Native Instruments Kontakt format. roland u-220 vst
If you own the original 1U rack hardware, you can use a VST-based editor to control it from your computer. This is the spiritual successor to the U-series