Works and looks great. Battery compartment is clean. Some rubbing on the edge where it contacts the case.

The OM-250m has exactly the same sounds, rhythms and features as the OM-300.


  • Dark grey, Suzuki OMC-3 molded plastic modular carrying case. It's super clean but the top-right corner is dented.
  • 28-page, Suzuki Omnichord OM-250m & OM-150 Operation Manual.


  • 84 chords (12 keys x 7 variations (major, minor, 7th, major 7th, minor 7th, augmented 5th, diminished))
  • 10 strumplate and chord voices (Omnichord (OM-27 strumplate and chord sounds), guitar, harp, banjo, strings, piano, organ, celeste, marimba and steel drums) with sustain 
and volume controls
  • Auto chord, chord plus and manual chord modes
  • 10 rhythms (including Rock 1 used by Damon Albarn on Gorillaz Clint Eastwood) with drum fill for each, synchro start, tempo and volume controls
  • Chord memory sequencer which can be toggled through using enter button or optional foot switch (not included)
  • 20-note melody keyboard with 5-note polyphony and 10 sounds (organ, 
banjo, trumpet, harmonica, piano, electric bass, human voice, marimba, 
calliope and steel drums)
  • Demo song "When The Saints Go Marching In" in 10 different styles
  • 1/4" output jack
  • MIDI Out so you can strum or play a MIDI-enabled synthesizer, keyboard or sound module

Runs on 8 "C" batteries or 12V, negative center AC adapter. I will include a compatible 12V AC adapter for US and Canada buyers only.

from Omnichord Heaven:

"After the success of the revised OM-100 & 200m Suzuki continued to develop and improve the Omnichord with two new models, the OM-150 and OM-250m. The major changes are updated sound engine with new voices and styles and both models now have 84 chords. Sadly, the Sci Fi theme has disappeared altogether. The brochures 
and manuals are far more sensible, with the exception of the 
'Omniguy' on the brochure front who has been hanging around since 
the OM-84. And some say clowns are scary!

One welcome change is an "OM-27" mode. Selecting the 'new' 
Omnichord Voice button not only results in a very familiar 
strumplate sound, the chord buttons make 
the good old Omnichord drone. Selecting a rhythm or another voice 
button automatically cancels it.

Oh, there is now a demo button so you can strum along to 
'When The Saints Go Marching In' in the style of Country, Bossanova, 
or Rock..and whatever other rhythms are on the Omnichord. Hmmm, we 
thought Omniguy was irritating! The OM-250m in Dark Grey replaces the OM-200m. It has all the features of the OM150, with the addition of piano keyboard (via the color-coded chord buttons) with Octave shift with a range from C-G2 with new voices (Organ, Banjo, Trumpet, Harmonica, Piano, Electric bass, Human Voice, Marimba, Calliope and Steel Drums). The Chord 
Computer first introduced with the OM-84 is included with a 120 step 
capacity. The Rhythm section is identical to the OM-150 with the 
addition of a Drum Fill. Like the OM-200m, the OM-250m is MIDI equipped, with Strumplate 
transmitting on channels 1, Bass on 2, Chord on 3. Chord Plus is on 
channel 4 and melody keyboard is channel 5. The Omnichord doesn't 
transmit much else other than Control Change 64: Sustain on channel 
1 only. Instant Off send 'All Note Off' command."


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Listeda month ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
  • OM-250M Omnichord
  • Black
  • 1994
Made In
  • Japan
  • 8 Voices
Analog / Digital
  • Digital
  • MIDI Output

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Joined Reverb:2013

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