- single smooth cutaway thin jumbo body, spruce top, mahogany back and sides, round soundhole with single ring rosette, multi-ply body binding, set mahogany neck, 15/22-fret rosewood fingerboard with pearl dot inlays, mahogany (Natural finish) or black (Black finish) headstock overlay, two-per-side chrome tuners, rosewood bridge, QPH electronics, available in Black or Natural finish, 32 in. scale, mfg. 2011-present.

- single sharp cutaway thin jumbo body, select spruce top, diagonal slotted sound channels (soundhole), bound body, mahogany back/sides, maple neck, 23-fret rosewood fingerboard with pearl dot inlay, rosewood bridge with brass insert, two-per-side tuners, chrome hardware, Equis Silver bass preamp system, available in Black, Natural (1994-2003), or Tobacco Sunburst (1994, 2011-present) finish, mfg. 1994-present.

- single sharp cutaway thin jumbo body, mahogany top, diagonal sound channels (soundhole), bound body, mahogany back/sides, maple neck, 23-fret rosewood fingerboard with pearl dot inlay, rosewood bridge with brass insert, two-per-side tuners, chrome hardware, Equis Gold bass preamp system, available in Black, Natural, Tobacco Sunburst, Trans. Black, Woodstone Brown, or Woodstone Red finish, mfg. late 1980s-1999.

- similar to AB20, except in five-string configuration, 3/2-per-side tuners, available in Black or Tobacco Sunburst finish, mfg. 1992-97.

- single sharp cutaway thin body, flamed sycamore top/back/sides, diagonal sound channels (soundhole), 15/23-fret exended rosewood fingerboard with dot inlay, black headstock with two-per-side chrome tuners, rosewood bridge, one bass humbucker pickup, piezo pickup in bridge, four knobs on face of guitar, active electronics, available in Natural or Tobacco Sunburst finish, mfg. 1994-97.

- single smooth cutaway deep body, select bound spruce top, oval soundhole, mahogany back and sides, mahogany neck, 17/24-fret rosewood fingerboard with dot inlay, two-per-side chrome tuners, rosewood bridge, Equis Silver electronics, available in Natural or Tobacco Sunburst finish, mfg. 1997-99.

- single cutaway with "Xtra-cut" jumbo body, select spruce top, round soundhole, mahogany back and sides, mahogany neck, 18/23-fret rosewood fingerboard with 12th fret Washburn inlay, two-per-side tuners, rosewood bridge, Equis Plus electronics, chrome hardware, available in Natural or Tobacco Sunburst finish, mfg. 1999-2003.

- similar to the AB34, except in five-string configuration, 3/2-per-side tuners, mfg. 1999-2002.

- similar to the AB35, except has a fretless fingerboard, available in Tobacco Sunburst finish, mfg. 2000-02.

- single round cutaway deep body, arched solid spruce top, diagonal sound channels (soundhole), bound body, quilted ash back/sides, multi-layer maple neck, 16/24-fret bound ebony fingerboard with pearl dot inlay, ebonized rosewood bridge with brass insert, bound peghead with pearl Washburn logo and stylized inlay, two-per-side tuners, gold hardware, active electronics, three knobs (v, 2 tone), Equis II bass preamp system, available in Natural or Tobacco Sunburst finish, mfg. late 1980s-1993.

- similar to the AB40, except in fretless fingerboard configuration, available in Tobacco Sunburst finish, mfg. late 1980s-1991.

- similar to the AB40, except has a select spruce top, maple back and sides, and Washburn electronics, available in Vintage Sunburst finish, mfg. 2004-present.

- single round cutaway deep acoustic bass body, arched spruce top, arched maple back, maple sides, round soundhole with no rosette, multi-ply body binding, mahogany neck, 16/24 extended-fret bound rosewood fingerboard with custom Stu Hamm yin-yang inlays, bound headstock with black overlay, Washburn logo, and Stu Hamm initial, two-per-side Grover tuners, monorail bridge, custom piezo bridge with three knobs, Buzz Feiten Tuning System, black chrome hardware, available in Black Cherry Burst or Natural finish, mfg. 2009-present.

- similar to AB40, except has an additional humbucker pickup, available in Tobacco Sunburst finish, mfg. 1992-93.

- similar to AB40, except in five-string configuration, 3/2-per-side tuners, available in Trans. Black or Vintage Sunburst (2011-present) finish, mfg. late 1980s-1991, reintroduced in 2006 and is currently produced.