Robert Ruck, 1981

A 1981 Ruck with the power of a doubletop and the warmth of aged spruce. A virtuoso kept it for years, and it is easy to hear why. This guitar spent a long chapter of its life in the hands of concert guitarist Isaac Bustos, and instruments that stay with a player at that level tend to stay for a reason.

Ruck is one of the most influential American luthiers of the twentieth century. His guitars have been played by generations of professionals, most famously by Manuel Barrueco on his 1972 No. 58, an instrument that helped define Barrueco's sound across performances and recordings worldwide. Nine years later, this 1981 example shows Ruck fully at the height of his craft.

What it delivers is a huge, piano-like voice with long sustain and remarkable clarity, and it does all of that while remaining sensitive and easy to control at the quietest dynamics. It is a big guitar that never asks you to fight it.

It is also set up beautifully. The action currently sits at 3.25mm on the bass side and 2.5mm on the treble side, which is ultra low and ultra comfortable, and something you almost never find on a concert instrument of this age and output. Combined with a thin, easy neck profile, it makes the longer 655mm scale disappear under the hand.

Sound

The first thing that stands out is the sheer power. Play this guitar for someone blindfolded and most people will guess double top. The basses are massive, with a low D that resonates like a piano string, and the trebles project with real openness and balance rather than thinning out above the twelfth fret.

Trying it left us wondering where all of it comes from. Is it the aged spruce? Is it that Brazilian rosewood? Is it four decades of being played seriously by someone who could really play? Whatever the source, the result is unusual for a traditional guitar of this size and vintage.

Unlike many spruce instruments that skew bright, this Ruck holds onto warmth and depth without giving up clarity. The sustain is extraordinary, and the sympathetic overtones create a chorus effect that recalls an organ more than a guitar. Notes bloom, hang, and gather color as they decay.

Just as important, it is not a one-volume instrument. It responds to a whisper as readily as it responds to being driven hard, and the range between those two extremes is where the guitar becomes genuinely fun to play.

Playability

The 655mm scale is slightly longer than standard, but the setup makes it feel like nothing at all. The action of 3.25mm bass and 2.5mm treble is about as low as a concert guitar gets without losing tone, and there is no buzzing or compromise in the sound to pay for it.

The neck is thin and comfortable with a 52mm nut, which keeps the left hand relaxed and makes stretches and position shifts easy across the fingerboard. Players who normally avoid a 655mm scale should try this one before deciding.

The combination of low action, an easy neck, and a guitar that produces this much sound with so little effort adds up to an instrument you can play for hours.

The spruce top has aged beautifully, with the warm color and settled quality that only decades of playing produce. The Brazilian rosewood back and sides are a striking set, dark and richly figured, and they remain crack free, which is increasingly rare on instruments from this period.

The bridge is Brazilian rosewood, and the headstock carries a Brazilian rosewood veneer in the classic Ruck shape. The rosette is the iconic Ruck design from this era, the kind of detail that identifies his work across a room.

The guitar also features dual soundports with their original plugs, a design element Ruck helped popularize long before it became common. Open, they push a considerable amount of sound and presence back toward the player. Plugged, the guitar returns to a more traditional response, so the choice stays with you.

The tuners are basic and fully functional, though they are not at the level of the rest of the instrument. An upgrade would be an easy and worthwhile step for a new owner, and the guitar deserves it.

Specifications

Back & Sides: Brazilian Rosewood

Action: 3.25mm bass / 2.5mm treble

Bridge: Brazilian Rosewood

Soundports: Dual, with original plugs

Tuners: Basic

Provenance: Formerly owned by Isaac Bustos

This guitar was owned and played for many years by Isaac Bustos, an acclaimed concert guitarist and teacher. Its condition and setup reflect that history: an instrument that was used, maintained properly, and clearly valued by the player who had it.

Overall condition is excellent, particularly for a guitar of this age.

There is one very small finish crack in the top. It is hardly noticeable, appears to have been addressed long ago, and is stable, with no effect on the sound or the structure of the instrument.

Beyond that, there is only light, normal playing wear. The Brazilian rosewood back and sides are crack free with minor marks from use. The guitar is structurally sound, fully concert ready, and has been exceptionally well preserved.