OM / Auditorium Acoustic Guitars

OM and Auditorium acoustic guitars have a medium-sized body with a pronounced waist, smaller than a dreadnought and larger than a Concert. This group includes OM (Orchestra Model), Auditorium, Orchestra and 000, names manufacturers use for similar body shapes. The sound is balanced across the bass, mids and treble, making these guitars suitable for both fingerpicking and strumming chords. Examples here include the Guild OM-340, LAG Tramontane T70A, SX SO104 and Bromo BAA4C and BAT4MC.

What is the difference between OM, 000 and Auditorium?

The OM and 000 names come from Martin. On models with the neck joining the body at the 14th fret, they describe the same body size, although an OM usually has a longer scale length. Other manufacturers call a similar body Auditorium or Orchestra, while Bromo uses Hillside Auditorium. When choosing, look beyond the name and compare the body dimensions and scale length listed for each guitar.

When should you choose an OM over a dreadnought?

An OM or Auditorium body suits you if you fingerpick, accompany quieter vocals or want a guitar that feels more comfortable to hold. A dreadnought is louder and has more bass, helping it hold its own when you strum in a group. For the same body shape with a pickup for amplified playing, visit our OM / Auditorium electro-acoustic guitars page.