The BOSS SP-505 Groove Sampling Workstation/SP-505 is a sampling workstation made by Boss Corporation, which is a division of Roland Corporation.
The digital sampler is part of the SP family and was released in the year of 2002, as a follow-up to Roland’s SP-303 installment.
Ironically, both the 303 and 505 installments were succeeded by the release of Roland's SP-404 in the year of 2005.
[1][2][3][4][5] The following list is a correct order of each SP installment's release, as an attempt to help musicians avoid any confusion.
Despite not initially becoming as popular as the 303 and 404 installments, the 505 is well-associated with hip-hop producer Madlib.