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Ibanez produced the GSRM20BS as part of the miKro Series, a line of short-scale electric bass guitars. With a 726mm (28.6") scale length, the GSRM20BS sat in the miKro range as an instrument built around a reduced scale format, making it suited to players requiring a more compact instrument.
The body was constructed from poplar, paired with a maple neck designated GSRM4. The jatoba fretboard carried white dot inlays and medium frets, with a 305mm radius. Neck dimensions measured 38mm at the nut, 58.5mm at the 22nd fret, 21mm in thickness at the first fret, and 22mm at the twelfth fret. String spacing at the B10 bridge was 19mm. Electronics consisted of a passive Dynamix P pickup at the neck position and a passive Dynamix J pickup at the bridge, a P/J configuration typical of the miKro bass line. All hardware was finished in chrome.
Owners requiring setup adjustments, fret work, or parts sourcing for the B10 bridge or Dynamix pickup series should consult a qualified guitar technician or luthier familiar with short-scale bass instruments.
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
