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Washburn built the AB5K-U as part of its Acoustic Bass series, positioning it as an acoustic-electric bass with a 32-inch scale and a round soundhole body design. The instrument was paired with a GB44 case, indicating it was offered as a kit configuration rather than a body-only or bare instrument.
Construction centres on a spruce top with a round soundhole, mahogany back and sides, and a rosewood fingerboard. The 32-inch scale length and 42mm nut width are the defining playability parameters for owners sourcing replacement strings, nuts or saddles: string sets and setup specifications should be matched to those figures rather than to standard long-scale bass dimensions. The rosewood fingerboard accepts standard replacement fretwire appropriate to its slot dimensions.
Owners seeking setup adjustments, fret work, or compatible replacement hardware should consult a qualified luthier or guitar technician who can assess the instrument in person.
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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Washburn
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From spec questions to full builds — players who have lived this gear since 2007.
Since 2007
