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Ibanez built the GSRM20BKL as part of the miKro Series, a line of short-scale bass guitars designed to accommodate players who required a reduced-scale instrument. With a 726mm (28.6") scale length, the GSRM20BKL sat at the compact end of the GSR bass family, sharing the series' passive pickup configuration while offering a more manageable reach along the neck.
The instrument was constructed with a poplar body and a maple neck bearing a jatoba fretboard with white dot inlays. Twenty-two medium frets ran the length of the board, which measured 38mm at the nut and 58.5mm at the 22nd fret, with a 305mm radius. Neck thickness measured 21mm at the first fret and 22mm at the twelfth. The electronics comprised a standard passive P-style pickup at the neck and a standard passive J-style pickup at the bridge, routed through a B10 bridge with 19mm string spacing. The nut was plastic, hardware was finished in chrome, and the instrument left the factory strung with .045/.065/.085/.105 gauge strings in standard E–A–D–G tuning.
Owners sourcing replacement parts should note that the B10 bridge's 19mm string spacing and the 38mm plastic nut width are the critical dimensions when identifying compatible replacements; a qualified guitar technician or luthier can advise on fitting and setup to keep the instrument playing correctly.
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
