An exceptionally unique, ultra-limited Grand Auditorium 12-fret — our top-of-the-top steel-string build with breakthrough materials and detailing.
Acoustic Steel – Opus Magnum – Guitar Summit 2025 specification
- Body shape: Grand Auditorium, 12-fret (GA 12-F), offset soundhole
- Top: X-WAVE (chemically-modified) — Ancient Kauri / curly old-growth Redwood pairing (per build)
- Back & Sides: X-ARS layered construction (ultra-hard inner reflection layer)
- Headstock: Open head; gold single tuners with amber buttons
- Scale / Nut: 650 mm / 44.5 mm
- Neck: Asymmetric profile, double-action truss rod
- Fingerboard: African Ebony, R14" compound radius, amber end inlay
- Acoustic Tubes outlet: Amber
- Bridge: Turkowiak pinless, hollowed bridge (Steel)
- Frets: 21, ArcFret™ EVO-GOLD
- Electronics: Optional high-end pickup systems
- Finish: Highly-resonant, hand-polished high-gloss
- Ergonomics: Arm bevel, rib bevel & palm bevel
- Rosette & purfling: Amber detailing available (per Magnum spec)
- Case: Fitted carbon-fiber hardcase
- Strings: Phosphor Bronze 12–53 (or per request)
- Warranty: Limited Lifetime
- Price (Opus Magnum): €25,000 net (excl. VAT)
- Availability: Please contact us
- Delivery: Worldwide shipping
- Build year: 2025
Opus Magnum — at a glance
Ultra-limited & singular
Top-of-the-top GA 12-F steel-string: amber detailing, ancient materials, offset soundhole projection.
Projection engine
X-WAVE top + X-ARS back & sides for power, balance and climatic stability, voiced for a wide dynamic range.
Playability & precision
ArcFret™ EVO-GOLD with R14" compound radius, gold single tuners with amber buttons, bevels for comfort.
Key innovations we use
X-WAVE top
Chemically-modified resonator top for immediate response and projection.
X-ARS back & sides
Layered construction with an ultra-hard inner surface for strong reflection and stability.
Acoustic Tubes (amber outlet)
Channels inside the neck tune resonances and enhance sustain; finished with an amber outlet.
Sigmoidal Side Joint
Patented, stronger and more elegant side connection.
Hollowed bridge (with drilled holes)
Our pinless, hollowed African Ebony bridge provides efficient energy transfer and easy maintenance.
Amber HeadLight
Translucent natural Baltic amber on the headstock for a distinctive, luminous look.
Amber BackLight Rosette
Back-lit amber rosette that softly glows and highlights premium craftsmanship.
ArcFret™ EVO-GOLD
Individually profiled curved-fret geometry that pre-compensates intonation; lighter and configurable for strings/scales/tunings.
Example builds — Acoustic Steel
Explore our GA and OM families while we prepare dedicated photos.
Hear it
Short performance on a recent GA/OM example.
Ordering & delivery
- Price (Opus Magnum): €25,000 net (excl. VAT).
- Deposit: 50% to start your build; balance before shipping. Deposit is non-refundable.
- Build time: Contact us for current lead time — it depends on the degree of customisation.
- Availability: Please contact us
- Worldwide shipping: insured delivery in a fitted carbon-fiber hardcase.
