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Ibanez built the GSRM20MPL as part of the miKro Series, a line of short-scale electric basses positioned for players requiring a reduced-length instrument. The miKro bass sat at the entry level of Ibanez's bass catalogue, distinguished from full-scale models primarily by its 726mm/28.6" scale length.
The GSRM20MPL features a poplar body paired with a maple neck designated GSRM4, and a jatoba fretboard with white dot inlays and medium frets. The nut width measures 38mm, widening to 58.5mm at the 22nd fret, with neck thickness running 21mm at the first fret and 22mm at the twelfth. The fretboard radius is 305mm. Pickup configuration follows a PJ arrangement: a passive Dynamix P at the neck and a passive Dynamix J at the bridge, mounted to a B10 bridge with 19mm string spacing. All hardware is finished in chrome.
Owners seeking replacement parts — including PJ-format pickups, a B10-compatible bridge, or jatoba fretboard nuts — should consult a qualified guitar technician or luthier to confirm fit against the instrument's stated dimensions before sourcing components.
Nothing in The Vault is for sale. These records exist so the instruments stay documented after the manufacturer moves on — and the most useful part of that record is what owners add to it.
The catalog shot showed one finish, under one light, a long time ago. Yours has been played. Photos from owners are what the next person finds when they are trying to identify a part, match a finish, or work out whether the one they just bought is really what the seller said it was.
Specs only go so far. What actually fits, what breaks first, what the factory got right and what everyone ends up changing — that lives with the people who own them, not in a datasheet. Post what you know and it stays on this page for whoever comes looking next.
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From spec questions to full builds — players who have lived this gear since 2007.
Since 2007
