Adamas 1598 12-String - USA 1999

Here’s something you don’t come across often — a beautifully maintained 1999 Adamas 1598 12-string, serial number 14877, in excellent condition, complete with its original Ovation hard case. This is one of Adamas' finest acoustic-electric 12-string models from the late ’90s — combining innovative design, exceptional playability, and lush, shimmering tone.

Originally launched by Ovation as their high-end, experimental division, Adamas guitars pushed acoustic design into new territory with advanced materials, unique bracing systems, and their unmistakable multi-soundhole epaulet tops. The 1598 model, however, stands out for its use of a solid spruce top, giving it a more traditional acoustic warmth while still benefiting from the projection and balance offered by Adamas’ signature design elements — including the rounded Lyrachord composite back and sophisticated fan bracing.

Tonally, the 1598 offers rich, piano-like lows, sparkling highs, and excellent note separation — traits that are often lost on lesser 12-strings. Whether strummed or fingerpicked, it delivers a lush, expansive voice with superb clarity and sustain. It excels in the studio and shines on stage thanks to the onboard Ovation OP-24+ preamp system, offering built-in EQ and reliable live performance tone shaping.

This particular guitar has been very well looked after. The top, fingerboard, back, and hardware are all in clean, original condition, with only light signs of play and no cracks, repairs, or major wear. The neck is straight, action is comfortable, and the frets are excellent — a rare find for a 12-string of this age. It comes housed in its original Ovation hard case, also in excellent shape.

For players seeking a high-performance 12-string with distinctive styling, excellent electronics, and true tonal complexity, this 1999 Adamas 1598 is a rare and rewarding option.

Features:

Action at 1st fret: 0.25mm

Action at 12th fret: 1.5mm

Neck depth at 1st fret: 23.52mm

Nut Width: 47.05mm

12 fret width: 58.26mm

Weight: 2.8kg / 6.17lb

Model: Adamas 1598

Year: 1999

Serial Number: 14877

Top: Solid Spruce with multi-soundhole epaulets

Back/Sides: Lyrachord composite, rounded back

Neck: Mahogany

Fingerboard: Ebony

Scale Length: 25.25"

Nut Width: 1 7/8"

Frets: 22

Electronics: Ovation OP-24+ preamp with EQ and onboard tuner

Bridge: Ebony

Case: Original Ovation hard case