Ibanez Wiki
2019 GSRM20 BK 1P 03.png
GSRM20 Black (more images) Red copyright sprite.png

The GSRM20 is a short scale Soundgear series solid body electric bass model introduced by Ibanez in late 2007. It has been made in both China and Indonesia as part of the entry level GIO line.

The GSRM20 features a double-cutaway mahogany body bolted to a 28.6" 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.

Several different woods have been used for the body material including basswood, poplar and agathis. For 2017 the Powersound pickups were replaced with Dynamix. For 2018 the rosewood fingerboard was replaced with treated New Zealand pine. For 2019 the fretboard material was changed to jatoba.

The GSRM20B is a similar model with black hardware. The GSRM20M is a similar model with a maple fretboard. The GSRM20L is a left-handed version. The GSRM25 is a similar five string model. The GSRM30 is a related model with a pair of jazz pickups.


Specifications for GSRM20
Model name: GSRM20
Year(s) produced: 2007–2021
Sold in: Asia & Africa / Europe / North & South America and Oceania / USA
Made in: China (2007–2017) / Indonesia (2012–2021)
Finish(es): Amethyst Sky Metallic (ASM) 2007–2010 / Brilliant Blue Metallic (BBM) 2008–2010 / Black (BK) / Brown Sunburst (BS) 2013–2021 / Candy Apple (CA) 2011–2019 / Lime Green Metallic (LGM) 2014–2016 / Metallic Forest (MFT) 2014–2015 / Metallic Gray (MG) 2014-2015 / Metallic Pink (MPK) 2013–2015 / Metallic Purple (MPL) 2011–2021 / Pearl White (PW) 2009–2021 / Root Beer Metallic (RBM) 2015–2021 / Roadster Orange Metallic (ROM) 2011–2017 / Starlight Blue (SLB) 2011–2021 / Tri Fade Burst 2017 / Transparent Red (TR) 2015–2021
Body type:
Solid body
Body material:
2007–2009: Mahogany
2010–2012: Basswood
2013–2017: Poplar, agathis or mahogany (depending on finish and market)
2018–2021: Poplar
Neck joint:
B10 fixed (19mm string spacing)
Knob style:
Hardware color:
Neck type:
Neck material:
1-piece maple
Scale length:
726mm / 28.6"
Fingerboard material:
2007–2017: Rosewood
2018: Treated New Zealand pine
2019–2021: Jatoba
Fingerboard inlays:
White dot
22 / medium
Plastic (38mm)
Machine heads:
Ibanez die-cast
Electronics/ Strings
Pickup configuration:
Bridge pickup:
2007–2016:Ibanez Powersound J bridge (J) passive
2017–2021: Ibanez Dynamix J bridge (J) passive
Neck pickup:
2007–2016:Ibanez Powersound P neck (P) passive
2017–2021: Ibanez Dynamix P neck (P) passive
Two volumes / Master tone
Output jack:
¼" stereo barrel (side mounted)
Factory tuning:
1G,2D,3A,4E (E standard)
Portal: miKro series | GIO series | SR series | Bass models Models-icon.png


Additional finishes/ details
2010 GSRM20 ASM 2Y 02.jpg
Amethyst Sky Metallic
2010 GSRM20 BBM 2Y 02.jpg
Brilliant Blue Metallic
2019 GSRM20 BS 1P 03.png
Brown Sunburst
2013 GSRM20 CA 2Y 03.jpg
Candy Apple
2016 GSRM20 LGM 1P 02.jpg
Lime Green Metallic
2015 GSRM20 MFT 1P 02.jpg
Metallic Forest
2015 GSRM20 MG 1P 02.jpg
Metallic Gray
2015 GSRM20 MPK 1P 02.jpg
Metallic Pink
2019 GSRM20 MPL 1P 03.png
Metallic Purple
2019 GSRM20 PW 1P 03.png
Pearl White
2019 GSRM20 RBM 1P 03.png
Root Beer Metallic
2019 GSRM20 ROM 1P 03.jpg
Roadster Orange Metallic
2019 GSRM20 SLB 1P 03.png
Starlight Blue
2017 GSRM20 TFB.jpg
Tri Fade Burst
2019 GSRM20 TR 1P 03.png
Transparent Red
Controls 2VT GSR.jpg
Controls layout
GSRM20 size comparison.jpg
Comparison between miKro and full-size bass


2016 Ibanez GSRM20 ( Short Scale Bass Guitar Review )