The Art of Straight Piano Making F. KAIM & SOHN

Artisanal excellence for unrivalled musical performance

Choosing an F. KAIM & SOHN upright piano means choosing an exceptional instrument, designed with respect for European traditions and modern requirements. Since 1819, F. KAIM & SOHN has distinguished itself by its commitment to quality, innovation and expressive sound. Each piano is the fruit of meticulous craftsmanship, with every detail designed to deliver a profound, authentic and lasting musical experience.

The Keyboard: the starting point for emotion

Noble wood for lasting precision

The quality of the keyboard determines the playing comfort and responsiveness of the instrument. At F. KAIM & SOHN, every key is made from fine-grained spruce, carefully selected and stabilized by months of natural drying. This wood, renowned for its acoustic properties and strength, ensures optimum touch transmission.

Handcrafted fit for a nuanced feel

Each key is assembled and adjusted by hand by our master craftsmen. The result is a homogeneous, responsive playing sensation that respects the subtleties of piano interpretation. This level of finish allows every pianist to develop his or her expression without technical constraints.

La Mécanique: precision at the heart of the action

100% solid wood architecture

The mechanics are made entirely of top-quality wood, chosen for its strength and ability to maintain its properties over time. Unlike other manufacturers who use synthetic components, F. KAIM & SOHN maintains a traditional approach guaranteeing a natural feel.

Performance tested on a large scale

Each action is tested to withstand over 500,000 strokes without loss of responsiveness or deformation. The rational layout of the components, inspired by German design, ensures direct transmission of energy from finger to string, without excessive friction or inertia.

Stabilized in the face of climatic hazards

An internal thermo-hygrometric stabilization system protects the mechanics against variations in temperature and humidity. Thanks to the CENTER process, the needles are adjusted for constant behavior, even in extreme environments.

Les Marteaux: the sound color of the instrument

World-class materials

The hammers are made from hard-wearing wood covered with German virgin wool felt, compacted to optimum density. This felt is renowned for its ability to faithfully reproduce harmonics, while remaining wear-resistant.

Hybrid manufacturing Germany/Japan

The integration of German and Japanese know-how ensures perfect timbre adjustment. Each hammer is calibrated to a precise tension to ensure even distribution of the sound spectrum.

Strings: balancing tension and resonance

Roslau strings: a German sound signature

Roslau strings, carefully braided in Germany, ensure stable tension and exceptional purity of sound. Their robustness guarantees remarkable longevity, while avoiding loss of vibratory energy.

Rope plan optimization

Each string is laid out according to a meticulous layout, ensuring even tension and precise interaction with the bridges and soundboard.

Structure and Reinforcement: the basis for exemplary stability

Laminated maple dowels and dowel blocks

The pegs are made of nickel-plated steel, inserted in a 17-ply hard maple block. This combination offers exceptional tuning stability, even under heavy loads.

Cast-iron decks and frames

A-maple bridges ensure direct, efficient transmission of vibrations to the soundboard. The precision cast-iron frame ensures even distribution of string tension. Weighing an average of 89 kg, it contributes to the instrument's structural longevity.

Soundboard: the living soul of the piano

The soundboard is made from resonant spruce, glued in three criss-cross layers to maximize sound projection. This unique design ensures balanced diffusion of bass, midrange and treble.

Wide, natural response

The combination of string tension, bridge distribution and soundboard curvature creates a natural, full and nuanced projection. Each note finds its place in a rich overall harmony.

Le Meuble: aesthetics at the service of the instrument

Eco-friendly lacquer and noble finishes

The finish is based on environmentally-friendly lacquers, applied in several coats to ensure a deep gloss or natural satin finish. The furniture combines classic aesthetics with contemporary lines.

Slow fall and functionality

The keyboard cover incorporates a damped closing system to guarantee comfort, safety and long keyboard life. A detail that makes all the difference on a daily basis.

Conclusion: F. KAIM & SOHN Excellence at your fingertips

Every F. KAIM & SOHN upright piano embodies a vision of music founded on heritage, technical excellence and a passion for sound. By choosing an instrument from this historic manufacturer, you gain access to a world of expressiveness, rigor and durability. Whether you're a budding pianist or a seasoned concert performer, an F. KAIM & SOHN upright will accompany you faithfully through every musical moment.

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