‘Hamer’ is well known for building world-class instruments with exceptional workmanship and attention to detail, and this rare, original 1994 Chicago USA-made DuoTone - GDOS is no exception. Hand-made in the 'Hamer' workshop in Chicago- USA, and released in limited numbers at the height of the mid-90s alternative rock boom, the DuoTone- GDOS combines electric and acoustic design with innovative switching options, offering tonal versatility few guitars can match. Noted artists who played and toured the DuoTone - GDOS include Tommy Shaw (Styx), Stone Gossard (Pearl Jam), Chris Cornell (Soundgarden), and Dweezil Zappa, proof of its professional pedigree. Features: • Semi-hollow, chambered mahogany body with solid spruce top. • Mahogany neck. • Figured rosewood fretboard. • Bare Knuckle P90 in the neck, raw, woody, vintage grit. • Seymour Duncan TB-4 JB Trembucker in the bridge, high-output, articulate, with strong mids, sweet highs, and singing sustain. • Ovation-designed bridge and piezo active pickup system, with built-in 3-band (Bass​/​Mid​/​Treble) EQ + dedicated EQ output volume, allows fine tonal shaping via the rear access panel for acoustic-like clarity, attack, and blend. • 1 x Volume (Push​/​Pull) + 1 x Tone control for neck​/​bridge pickups. • 1 x Volume control Piezo (Acoustic) pickup. • 1 x 3-way min toggle switch (Neck​/​Bridge​/​both pickup combinations). • 1 x 3 way switch (electric ​/​ acoustic ​/​ both). • Three acoustically tuned circular sound holes for natural resonance. • 24.75" scale mahogany neck. • 14.5" radius rosewood fingerboard, 22 frets, dot inlays. Tone & Versatility: The combination of P90 + Humbucker + Ovation Piezo unlocks a massive tonal palette: • Neck: Bareknuckle P90 – warm, open, vocal, and vintage-voiced, perfect for jazz, blues, and alt tones • Bridge: Seymour Duncan TB-4 JB Trembucker – powerful, articulate, with strong upper mids and tight low end; one of Seymour Duncan’s most famous rock pickups, delivering sustain and harmonics for everything from classic rock to modern hard rock • Piezo Acoustic System, designed by Ovation: with built-in 3-band EQ + volume; allows precise control over acoustic-like tones, adding clarity, shimmer, and percussive attack while blending seamlessly with the magnetic pickups. Blends​/​Connectivity Options: • Use dual outputs to send P90​/​Humbucker and Piezo (Acoustic) signals to separate amps for optimal studio clarity, or • Run a Y-cable (Supplied) into a single amp to hear either electric, or acoustic, or blend both signals options at once in a live gig situation. The guitar’s flexible stereo output options make it a true hybrid powerhouse on stage or in the studio. Condition & Setup This one owner guitar has been lightly home studio played, lovingly cherished and remains in excellent, near mint condition: • Free of pick, buckle, thumb, or fingerboard wear. • Neck profile is smooth and effortless to play. • Strung with medium-gauge nickel (.010–.046), set up with moderate relief for hybrid playing. • Electronics fully checked, controls cleaned, new battery installed, all in perfect working order. Case: Includes the rare, original 'Hamer' hard shell fitted case with 'Hamer’ script logo, all catches and lock fully functional, and plush interior. This case not only provides excellent protection but is a highly collectible accessory in its own right. Please review all photos carefully as they form part of the description. We are happy to provide additional photos on request. Summary: A very rare opportunity to purchase a rare ‘Hamer’ hand-made, top of the line, high quality, DuoTone - GDOS, one owner guitar from a ‘Golden Build Period’, not seen on the market in 30+ years, with highly desirable build features. Significantly appreciating in value due to a very limited production release making this ‘'Hamer'’ model highly desirable to Collectors, Investors and discerning Stage players. A strikingly handsome vintage instrument in a distinguished lineage of hand-made 'Hamer’ pro quality guitars. Not only a truly stellar guitar but a very sound investment piece. 'FREE' - World Wide Shipping! Delivery Conditions: This guitar will be carefully packed before being despatched using the best couriers and shall be fully insured by a separate dedicated transit insurance policy for the purchase amount. Please contact us for specific courier ​/​ insurance rates to your destination. No returns. CCG T&C's apply at all times (see shop policies)