Roland JV series
The Roland JV series is a line of PCM ROM sample-based (ROMpler) synthesizers, mostly in sound module form, produced by Roland from 1992 onwards. While containing similar underlying synthesis technology to the prosumer Roland Sound Canvas series, they target a more professional market, with most models being full-width rack units, and having a focus on high-quality, fully-editable multi-layer synth patches and expandability, and less of a focus on multitimbrality. Some units have basic General MIDI support, but none have Roland GS support.
It was succeeded by the Roland XV series, which replaced mono sample layers with stereo sample layers, and switched from 32kHz to 44.1kHz sampling.