Ibanez Wiki
2019 GSRM25 BK 1P 02.png
GSRM25 Black (more images) Red copyright sprite.png

The GSRM25 is a five-string, short scale Soundgear series solid body electric bass model introduced by Ibanez in late 2012. It is made in Indonesia as part of the entry level GIO line.

The GSRM25 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 B15 bridge with 16.5mm 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 GSRM20 is a similar four string model.


Specifications for GSRM25
Model name: GSRM25
Year(s) produced: 2012–2021
Sold in: Europe 2018–2019, 2021 / USA
Made in: Indonesia
Finish(es): Black (BK) / Pearl White (PW) 2014–2015
Body type:
Solid body
Body material:
2012–2014: Agathis
2015–2018: Mahogany
2019–2021: Poplar
Neck joint:
B15 (16.5mm string spacing)
Knob style:
Hardware color:
Neck type:
Neck material:
1-piece maple
Scale length:
726mm / 28.6"
Fingerboard material:
2012–2017: Rosewood
2018: Treated New Zealand pine
2019–2021: Jatoba
Fingerboard inlays:
White dot
22 / medium
Plastic (45mm)
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,5B (E Standard)
Portal: miKro series | GIO series | SR series | Bass models Models-icon.png


Additional finishes/ details
2015 GSRM25 PW 1P 01.jpg
Pearl White
Controls 2VT GSR.jpg
Controls layout
GSRM20 size comparison.jpg
Comparison between miKro and full-size bass