Kostal OMC, Master Grade Koa & German Spruce


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  • 25% deposit secures the guitar
  • Spread the remaining cost over 11 months

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Jason Kostal himself says that if you're going to have one guitar, it should probably be an OM. And if it's a Kostal OM with cutaway like this one, with German spruce top and subtly figured koa, we don't think that's a hard choice to make. Jason describes his OM as having a warm bass presence and being well-balanced across the tonal spectrum, and we couldn't agree more. But with koa back and sides, there's an added presence in the treble and mids, bringing the dynamic range of this versatile model up a notch.

A slightly shorter than standard scale length of 25" (as opposed to 25.5" or similar) makes fretting all that much easier, with no loss in body for when you want to dig in with a flatpick. This OMC's voice would be equally satisfying playing solo or in small ensemble performances. Overall, it's an ideal choice for performers who often plug in.

Last but not least, are Jason's proprietary aesthetic finishing touches. The stained glass rosette is a summery orange hue to match the warm koa coloring, while ebony binding and ebony on the two-tone headstock forms a nice contrast.

  • Model: OM with cutaway
  • Top: German spruce
  • Back and sides: Master-grade koa
  • Scale length: 25”
  • Nut width: 1.75”
  • Lower bout: 15.562”
  • Depth: 4.50”
  • Top braces: Sitka spruce
  • Back braces: Mahogany
  • Neck: One-piece Honduran mahogany
  • Fingerboard: Ebony with ebony binding
  • Fretwork: Medium tall
  • Rosette: Stained glass
  • End graft: Decorative
  • Headstock veneer: Two-tone
  • Binding: Ebony
  • Cutaway: Florentine
  • Bridge: Ebony
  • Tuners: Gotoh 510
  • Case: Hoffee custom hard case
  • Serial number: 187
  • Year of build: 2021


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Easy Returns

Every guitar comes with a 72-hour appraisal period so if you're not satisfied you can return the instrument to us

Why buy this guitar

Key Features

Kostal OMC, Master Grade Koa & German Spruce
The ever versatile OM in Jason Kostal's hands is a little deeper in body and slightly shorter in scale, for a comfortable playing, do-it-all guitar with warm bass and clean tone
The trademark Kostal stained glass rosette is a tropical warm orange hue to match the figured koa of the back and sides
Koa back and sides add brightness and sweetness in the high end, but thanks to Jason's bass-rich OMC design, this guitar is still plenty balanced



Based in Phoenix, Arizona, luthier Jason Kostal set up independently following four years teaching at the prestigious Roberto-Venn School of Luthiery, and an extended three-year apprenticeship with Ervin Somogyi.

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Why Buy From The North American Guitar

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We offer an array of flexible finance options so that you can secure your dream guitar

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All instruments ship in triple-layered guitar boxes stuffed with packing peanuts

Fully insured global shipping

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What you see at checkout is what you pay so there are no surprises at your door

72-hour appraisal period

All our guitars come with an appraisal period meaning easy returns if you’re not satisfied