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Washburn built the SB1PB-A-U as part of its Sonamaster series, positioning it as an entry-level electric bass aimed at players beginning their musical journey. The model carried an 80s-inspired body shape and a reverse headstock, with offset position markers as distinguishing visual details. It was offered in Black Gloss and Tobacco-Sunburst finishes.
The bass was constructed with an alder body and a bolt-on maple neck. The fretboard is engineered wood with dot inlays, an ABS nut at 1-5/8" width, and 21 frets over a 34" scale. A Washburn P-style split-coil humbucking pickup drives a straightforward passive control layout of one volume and one tone. Hardware throughout is chrome, including diecast tuners and a hardtail bridge. The instrument shipped strung with D'Addario EXL170 light-gauge strings.
Owners seeking replacement parts should note that the P-style pickup cavity, 34" scale, and standard chrome hardware dimensions are widely shared across the industry, which broadens compatibility options for pickups, bridges, and tuners. For setup adjustments or hardware fitting, consult a qualified guitar technician or luthier.
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
