The M340 is a Maple series acoustic guitar model introduced by Ibanez for 1978. It was crafted in Japan.
The M340 features a dreadnought body with a spruce top on flamed maple back and sides with a high gloss finish and a black and white binding. The round soundhole has a black and white acrylic rosette and a red tortoise pickguard. The maple neck has a 21-fret rosewood fingerboard with pearl dot position markers and a black headstock. Components include a compensated plastic saddle in a rosewood bridge with ivory bridge pins, a plastic nut, and gold Smooth tuners machine heads.
For 1981 the neck was changed to mahogany.
The M370 is a similar model with a fancy wood body binding. The M342 is a 12-string version.