The Art of Perfection

100 years later, the petosa philosophy remains unchanged

The petosa brand represents the gold standard of accordions - a century of relentless dedication to craftsmanship and the pursuit of perfection. Using traditional handcrafted methods in combination with modern innovation, a petosa embodies the finest quality accordion in production today. 10 Year Warranty, Lifetime Reed Guarantee, Lifetime Maintenance and a lifelong relationship with our family... It's no surprise why the most demanding musicians choose to play petosa

The AM-1100

Pioneering the Standard

The AM-1100 model sets the standard by which all other accordions are compared. No one instrument is the same as each accordion is handcrafted using old-world, traditional techniques. No accordion today parallels the AM-1100's quality of materials or craftsmanship, setting it apart from any other high caliber, modern accordion.

Relentless Durability

The AM-1100 is built to last multiple lifetimes, and we have the history to prove it. A restored AM-1100 from 1960 is, on average, ten times more valuable today than it was brand new, thanks to the relentless durability still being replicated and improved upon today.

Mahogany Cabinet

The AM-1100 uses one of two cabinet constructions: solid-core mahogany (Cathedral and Grand Concert) for a brighter acoustic tone or 5-ply mahogany (Concert, Jazz and Musette) for a warmer acoustic tone. The handmade cabinet is dried and seasoned longer than any in the industry, ensuring stable and unchanging integrity. 

Solid Walnut Keyboard

As the only modern accordion with a handmade solid-walnut keyboard, the AM-1100 takes the best from the 'Golden Era' of American production and embodies the best of tradition and combines state-of-the-art, contemporary materials and mechanics. The solid walnut fulcrum, as opposed to the industry standard brass (metal on metal), reduces friction and improves action and longevity. The walnut keyboard bed and felted guides create a silky smooth and responsive touch. The solid, hand forged aluminum key arms, waxed wood valves, dense felt & leather pads and lucite key tops result in the most efficient, precise and long-lasting keyboard ever produced.

Precision Bass System

While the bass mechanics of most Italian-made accordions are an engineering marvel; the AM-1100 advances an already intricate machine to a whole new level. Featuring all-chromed components, wood valves with felt and leather pads, felt bass/chord rails and the addition of a felted chord rake stopper rail. To further reduce mechanical noise, the chromed fulcrum rods are precisely positioned tightly together creating no room for play, mahogany bass board with felted button openings, mahogany bass cover plate for tonal warmth and insulation, and silicone-wrapped arm pins for the ultimate silent bass mechanism. 

Artisan Reed Construction

The AM-1100 is built with the finest precision handmade reeds and calfskin reed leathers (no plastic), as are all petosa models. The aluminum plate, Swedish blue steel tongue and rivets are honed to perfection, mounted and tailored to each accordion, one at a time. Using traditional handmade techniques combined with new patented, computer engineered reeds and 3-piece mahogany & walnut blocks, the reed construction of an AM-1100 optimizes power, precision and responsiveness of the instrument. Two sets of reeds are mounted in the tone chamber made from one-piece of solid mahogany (not aluminum), creating what many refer to as 'the petosa sound'. 

Everlasting Bellows

Italian-made bellows are either produced in large quantities or individually made, one at a time. The AM-1100 uses the highest quality bellows construction, individually made for each instrument. Solid walnut bellows frames are handmade for each accordion, ensuring a perfect and secure fit. Felt gaskets, stainless steel or gold-plated bellow corners, durable fabric lining and lambskin gussets endure decades of rigorous use and maintain optimum integrity. Stainless steel machine screws allow for repetitive access to internal components while preventing compression loss over time. 

Robust Hardware

All chromed and stainless steel or gold-plated hardware fortifies the AM-1100 and the accessories that go with it. Using machine screws instead of wood screws ensures the most secure and robust attachment points. Resistant to corrosion and rust, the chromed hardware is designed and installed to last lifetimes. 

Meticulous Refinements

The finishing on components of the AM-1100 reflect the persistent pursuit of perfection from petosa. Multiple coats of special luthier varnish cover the reed blocks, solid tone chamber and other mahogany surfaces. Each reed leather perfectly cut and installed by hand with special mylar booster covering for the best of performance and longevity. Chromed and gold plated reed block hardware ensures optimum and secure fit. Every aspect of the 1100 is micro-crafted to perfection; no detail overlooked.

A Finished Masterpiece

The AM-1100 takes eighteen months to go from raw materials to a finished work of art. The combination of traditional, artisan construction techniques and modern, state-of-the-art materials and mechanical engineering give rise to the ultimate accordion masterpiece. The contemporary AM-1100 embodies the highest level of craftsmanship that has ever been produced in the accordion insdustry and to this day, maintains its reputation as the world's highest quality accordion. As a Stradivarius or Ferrari is not for everyone, those that desire the abosulte finest product of its class will appreciate the enduring quality and expression that only improves with time. The 1100 becomes a part of the artist and their family which will be passed down from one generation to the next. 

The Factory - Castelfidardo, Italy

AM-1100 Series

Cathedral Bayan Series

Artista Pro Series

Leggera Series

Artista Series

Little Pro Series


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