Only three names are routinely spoken of as having genuinely redirected the classical guitar's design: Antonio de Torres in the 1860s, Greg Smallman with his lattice bracing a century later, and Matthias Dammann, whose "double top" soundboard has, since the late 1980s, become one of the most widely copied structural ideas in modern lutherie. What's unusual about Dammann's story is how late, and how self-taught, his path into guitar making actually was.

A Late Start, and a Restless Ear

Dammann was born in Germany in 1957 and didn't pick up the guitar until his late teens — late, by the standards of most concert-level players and luthiers, many of whom start as children. He taught himself at first, then took private lessons, and eventually pursued formal training at the music academy in Frankfurt. After finishing his studies there, he stayed on as a lecturer in guitar, teaching the very instrument he was, at the same time, quietly beginning to take apart in his spare time.

From early on, Dammann showed a compulsive, almost scientific curiosity about what actually made a guitar sound the way it did. He ran small experiments on his own instrument — altering the diameter of the soundhole, for instance, just to hear what changed. That curiosity soon extended to inexpensive factory-made guitars, which he began pulling apart and modifying, swapping tops and testing variations, essentially teaching himself the craft of lutherie through direct, hands-on experimentation rather than formal apprenticeship.

He carried an idea in his head of what the classical guitar could become — not a different instrument, but more fully the beautiful thing it already was.On the ideal Dammann pursued in his early experiments

Inspired by the Masters, Frustrated by the Wood

Dammann's own instrument for years was a 1968 Daniel Friederich, and he drew deep inspiration from the guitars of Antonio de Torres, Miguel Rodríguez, and Robert Ruck — three very different builders united by a certain purity of tone. Studying their instruments closely, Dammann became convinced that a traditional solid soundboard, however skillfully carved and braced, carried built-in limits: a ceiling on how light, stiff, and acoustically responsive a single piece of spruce or cedar could ever be made without simply becoming too fragile to use.

That frustration with the material itself, more than any dissatisfaction with the instrument's traditional shape or bracing philosophy, pushed him toward an entirely different question: what if the soundboard wasn't a solid piece of wood at all?

Building the First "Sandwich"

In 1989, Dammann built the first version of what the guitar world now calls the double top: a soundboard made not from one solid piece of wood, but from two extremely thin layers of cedar, bonded around a lightweight inner core made of thin cedar strips, all pressed and glued together as a single sandwich structure. The resulting top was dramatically lighter than a conventional solid soundboard, and far freer to vibrate, while a solid wooden core running through the middle still gave the instrument a full, rich tone rather than the thin, brittle sound a lighter top might be expected to produce.

Six years later, in 1995, Dammann refined the idea further, replacing the wooden core with Nomex — a light, rigid honeycomb material originally developed for aerospace and industrial applications. The Nomex-core double top became the design most closely associated with his name, and the template that other builders around the world would go on to adopt and adapt in the decades that followed.

Why the Double Top Changed the Conversation

The acoustic logic behind the double top is straightforward, even if the engineering to achieve it wasn't: a lighter, stiffer soundboard moves more freely under string vibration, and a top that moves more freely produces more volume, faster response, and greater projection — exactly the qualities a touring soloist needs to fill a modern concert hall over a full symphony orchestra or against a chamber ensemble. Reviewers and players alike came to describe the sound of a Dammann double top in strikingly consistent terms: powerful, room-filling, dark in timbre, and unusually even across the balance between bass and treble, with individual notes staying clearly separated even at high volume.

Dammann's combined artistic and almost scientific approach to the problem earned early validation: in 1988, the year before he built his first double top, he won the Grand Prix at the Paris/ORTF International Guitar Maker Competition, a signal that the broader lutherie world was already taking notice of where his research was heading.

The Players Who Made the Case for Him

Word of the double top's sound spread quickly among concert guitarists once players actually got their hands on one. In 1993, Manuel Barrueco became the first internationally prominent guitarist to adopt a Dammann double top, and he has continued to play the maker's instruments ever since. David Russell acquired one a few years later and has used Dammann guitars for the majority of his recordings and concert performances over the following decade, alongside instruments by a small handful of other builders. Andrew York, Scott Tennant, Pepe Romero, and the Beijing Guitar Duo are among the other prominent players who have performed and recorded on Dammann instruments over the years.

That kind of endorsement, from performers who could choose literally any luthier's work, did as much as any technical argument to establish the double top as a serious, permanent option within classical guitar making — not a passing experiment, but a genuine structural alternative to the solid soundboard that had gone essentially unquestioned since Torres.

Scarcity, Demand, and a Waiting List Measured in Years

As with several of the great luthiers before him, Dammann's output has always been small relative to the demand for his instruments. New guitars from his workshop have reportedly carried waiting lists stretching to a decade or more at times, and secondhand instruments routinely command prices in the tens of thousands of dollars on the rare occasions they come up for resale — a testament to both the guitar's reputation among players and the sheer scarcity of Dammann's output over a career built on patient, hands-on research rather than production-line output.

A Legacy That Belongs to a Whole Generation of Makers

What makes Dammann's influence unusual, even among great luthiers, is that it operates on two levels at once. Like Torres and Smallman before him, his own instruments are treasured individually, played and recorded by some of the finest concert guitarists alive. But unlike a maker whose legacy lives only in the guitars that carry his own label, Dammann's real innovation — the double-top principle itself — has been studied, adapted, and built upon by an entire generation of luthiers who followed him, including builders such as Dieter Müller and Jim Redgate, working independently in workshops around the world.

The double top hasn't replaced the traditional solid-top guitar, and many players still prefer the particular warmth and character a fine solid soundboard offers. But it gave every serious builder working after 1989 a genuinely new option to weigh — a rare and lasting kind of influence for any single luthier to have on an instrument as old, and as carefully guarded by tradition, as the classical guitar.