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
