The Custom Shop 0-18 and 0-28 bring premium timbers to Martin's Concert-size body, while the reborn 5-28 Terz lands as the smallest guitar in the range.
Martin has gone small for its latest run of acoustics, with three compact-body models joining the 2026 lineup and two of them heading into the Custom Shop.
Catch up on all the latest news here.
Custom Shop 0-18
The 0-18 answers long-running demand for the small 0 body, which Martin counts as a Concert size, dressed up here with premium timbers and hand work. A solid Adirondack spruce top with aging toner sits over genuine mahogany back and sides for clear trebles, punchy mids and a focused bottom end that suits fingerstyle, songwriting and recording. Hand-shaped Golden Era scalloped X-bracing gives it vintage-leaning resonance and sustain, while the short scale and rounded neck keep the feel relaxed and worn-in.
- Solid Adirondack spruce top with aging toner
- Genuine mahogany back and sides
- Hand-shaped Golden Era scalloped X-bracing
- 24.9-inch short scale with GE Modified Low Oval neck
- 14-fret Concert (0) body in vintage gloss
- Old Style 18 inlays, ebony fingerboard and faux tortoise pickguard
- Available left-handed
Custom Shop 0-28
Same 0 body, a step up in tone and trim. The 0-28 keeps the solid Adirondack spruce top but moves to solid East Indian rosewood back and sides for a warmer, deeper voice with richer overtones, balanced by the clarity the small body is known for. Style 28 appointments give it a dressier look, and the hand-shaped Golden Era bracing, short scale and GE Modified Low Oval neck carry across from the 0-18.
- Solid Adirondack spruce top with aging toner
- Solid East Indian rosewood back and sides
- Hand-shaped Golden Era scalloped X-bracing
- 24.9-inch short scale with GE Modified Low Oval neck
- Style 28 trim: grained ivoroid binding, bold herringbone top inlay, diamond and square fingerboard markers
- Available left-handed
Standard Series 5-28 Terz
The real curio of the three. The 5-28 Terz revives Martin’s Size 5, now the smallest instrument the company makes, a 12-fret model on a tiny 21.38-inch scale built for Terz tuning – a minor third above standard, which gives it a bell-like, shimmering voice that sits up above a regular guitar in an arrangement. It’ll take standard pitch too for anyone who wants the extra versatility, and Style 28 appointments round out a guitar with roots going back to the earliest days of Martin.
- Size 5 body, the smallest guitar Martin offers
- 12-fret design with a short 21.38-inch scale
- Built for Terz tuning, a minor third above standard, and tunable to standard pitch
- Gloss spruce top with aging toner
- Solid East Indian rosewood back and sides
- Style 28 trim with antique white binding and mother-of-pearl fingerboard inlays
- Available left-handed
Small-bodied Martins have long had a following among players after a more intimate voice, and this trio gives that crowd fresh options at the top of the catalogue, from the roomier 0s through to the oddball little Terz.
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