The Roland SP-808 GrooveSampler and SP-808EX/E-Mix Studio are both discontinued workstations, which function as digital samplers, synthesizers, and music sequencers.
The following list is a correct order of each SP installment's release, as an attempt to help musicians avoid any confusion.
In an effort to maximize storage space on zip disks, Roland decided against the use of AIFF and WAV audio formats.
[3][4] Being an upgrade from the Groovesampler, the SP-808EX E-Mix Studio includes a virtual monophonic synthesizer for use with the step sequencer and D-Beam controller.
[5][6] Despite receiving little popularity in comparison to the later SP-303 and SP-404 installments, Slipknot member 133 is known to have utilized the sampler for a number of years.