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2019 GSRM20B WNF 1P 02 en 1
GSRM20B Walnut Flat (more images) Red copyright sprite

The GSRM20B is a short scale Soundgear series solid body electric bass model introduced by Ibanez in 2015. It was sold with a gig bag as the GSRM20BGB. It was made in both China and Indonesia as part of the entry level GIO; Indonesian production ended in 2022. Differences exist between the Chinese and Indonesian models as enumerated below; the variants are sold in different markets.

The GSRM20B features a double-cutaway mahogany body bolted to a 28.6" (726mm) scale maple neck with a 22-fret rosewood fingerboard with white dot position markers. Components include a pair of Ibanez Powersound pickups with a jazz pickup at the bridge and a precision pickup at the neck, a B10 bridge with 19mm string spacing, a plastic nut, and Ibanez tuning machines.

For 2017 the Powersound pickups were replaced with Dynamix. For 2018 the rosewood fingerboard was replaced with treated New Zealand pine or Jatoba, depending on the market. For 2019 the body material was changed to okoume. For 2020 the fretboard material was again changed, this time to purpleheart.

The GSRM20 is a similar model with chrome hardware.

Specifications[]

Related content: miKro series | GIO series | Soundgear series | Models-icon
Specifications for GSRM20B
Model name: GSRM20B
Year(s) offered: 2015–2026
Sold in: America & Oceania MIC / Asia & Africa MIC / China MIC / Europe MIC / USA MII 2015–2020 / USA & Canada MII 2021–2022 / USA & Canada MIC 2023–2026
Made in: China (2016–2026)/ Indonesia (2015–2022)
Price: MSRP: US$257.13 (2015[1]) / US$285.70 (2022–2025)[2][3] / 219 (2024)[4] / US$314.17 (2026)[5] • SMAP: US$199.99 (2022–2025)[2][3] / US$219.99 (2026)[5]
Finish(es): Brown Sunburst (BS) 2021 MIC / Walnut Flat (WNF) / Weathered Black (WK)
Body
Body type:
Solid body
Body material:
2015–2018: Mahogany
2019–2022: Okoume MIC or Poplar MII
2023–2026: Okoume
Neck joint:
AANJ
Bridge:
B10 (19mm string spacing)
Strap buttons:
16mm metal button w/ black felt washer
Knob style:
Knurled metal dome
Hardware color:
Black
Neck
Neck type:
2015–2022 MII: GSRM4 (Indonesia)
2016–2026 MIC: GSRM4 (China)
Neck material:
1-piece maple
Scale length:
726mm / 28.6"
Fingerboard material:
2015–2017: Rosewood
2018–2019: Treated New Zealand pine MIC or Jatoba MII
2020–2022: Purpleheart MIC or Jatoba MII
2023–2026: Purpleheart
Fingerboard inlays:
White dot
Frets:
22 / medium nickel silver
Nut:
Plastic (38mm)
Machine heads:
Ibanez die-cast
String gauge (factory):
.045/.065/.085/.105
Factory tuning:
1G,2D,3A,4E (E standard)
Electronics/ case
Pickup configuration:
JP
Bridge pickup:
2015–2016: Ibanez Powersound J bridge (J) passive
2017–2026: Ibanez Dynamix J bridge (J) passive
Neck pickup:
2015–2016: Ibanez Powersound P neck (P) passive
2017–2026: Ibanez Dynamix P neck (P) passive
Controls:
Two volume / master tone
Output jack:
¼" stereo barrel (side mounted)
Recommended gig bag:
BGBMIKRO or IBBMIKRO
Included gig bag:
GSRM20BGB version only

Images[]

Other available finishes
2021 GSRM20B BS 2Y 05
Brown Sunburst
2019 GSRM20B WK 1P 02
Weathered Black
Additional details
Controls 2VT GSR
Controls layout
GSRM20 size comparison
Comparison between miKro and full-size bass

Sources[]

  1. 2015 USA new product book (p. 26)
  2. 2.0 2.1 2022 USA catalog (p. 106)
  3. 3.0 3.1 GSRM20B-WK product listing, Adorama (US retailer), archived February 2025
  4. 2024 Europe catalog (p. 106)
  5. 5.0 5.1 GSRM20B-WNF product listing, Adorama (US retailer), archived January 2026
  • GSRM20B-WNF (2Y-07) MIC parts list, Ibanez parts catalog, archived January 2026
  • GSRM20B-WK (1P-02) MII parts list, Ibanez parts catalog, archived January 2026
  • GSRM20B MII product page, Ibanez USA, archived April 2015
  • GSRM20B MII product page, Ibanez USA, archived October 2019
  • GSRM20B MIC product page, Ibanez Europe, archived January 2020
  • GSRM20B MIC product page, Ibanez China, archived January 2021
  • GSRM20B MII product page, Ibanez USA & Canada, archived January 2021
  • GSRM20B MIC product page, Ibanez Americas & Oceania, archived June 2022
  • GSRM20B MII product page, Ibanez USA & Canada, archived June 2022
  • GSRM20B MIC product page, Ibanez Asia & Africa, archived January 2023
  • GSRM20B MIC product page, Ibanez USA & Canada, archived January 2023
  • GSRM20B MIC product page, Ibanez Europe, archived January 2024
  • GSRM20B MIC product page, Ibanez China, archived February 2025
  • GSRM20B MIC product page, Ibanez Americas & Oceania, archived January 2025
  • GSRM20B MIC product page, Ibanez USA & Canada, archived January 2026