Piano 1611
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Dear music lovers

My great-great-grandfather Antonín Petrof built his first grand piano in 1864. Much has changed since then, but the skill, care and innovatory spirit that go into our pianos have remained. In tribute to our founder we have created the ANT. PETROF premium brand.

We are proud to announce the completion of a new family of instruments with the brand name ANT. PETROF. This name has
a special significance for us as it is the product of the highest expertise of PETROF specialists in development, technology and construction. The excellent initial reception and success of these top-of-the-range instruments fill me with delight and I trust that my grandchildren will find the same pleasure as I do in their rich, powerful and romantic tone.

May ANT. PETROF become your trusted friend and companion on your long journey of musical recognition.

Sincerely

Zuzana Ceralová Petrofová President of PETROF Group

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Its tremendous sound reaches into every corner of any concert hall in the world. At the same time it remains true to its roots and respects the colourful, romantic and rounded tone of PETROF instruments. It may be a giant, but its elegance and sensitivity are remarkable. An instrument that breathes life into the wildest dreams of the artistic spirit, while opening the hearts of the most demanding listeners

The ANT. PETROF 275 was the first instrument of its name, and is the PETROF company flagship. The eyes of the world watched over its five years of development and two years of testing. This instrument brought many innovations to the pianomaking craft, some of which have since been patented, and it has come to symbolise modern technologies while at the same time preserving the traditional techniques of the greatest pianomaking craftsmen. In particular its completely new construction, first class materials and careful processing make it an impressive instrument.

Many musicians have expressed their enchantment with the way its wonderful sensitivity and flexibility allow for creativity and invention. As they play it, it will fill the world’s concert halls with its sound and stir the hearts of music lovers everywhere. 

The ANT. PETROF 225 was the second piano to bear the premier brand-name ANT. PETROF. It benefits from its elder brother’s development, using every certified innovation and patent in combination with the finest European materials. This is an exceptionally versatile instrument. Despite its dimensions, its sound is surprisingly powerful, yet also amazingly colourful and vivid. It is distinguished by its pleasant sonority across the whole keyboard, and its very precise action. 

The ANT. PETROF 136 is potentially a revolutionary instrument in the history of piano manufacture. Write history with us and allow yourself to be carried away by its grandiose yet unusually pleasing tone. 

The ANT. PETROF 136 upright is the youngest family member. The original and unusually robust construction of the body gives the piano great solidity and guarantees the long-term stability of the instrument, especially in its tuning and action. These attributes are essential for achieving high quality performance., and contribute greatly to a player’s confidence. Its high acoustic capacity, the response of its action, its colourfulness across the whole tonal range and its characteristic romantic sound makes the piano similar in feel to a concert grand. 

Bridges

Solid maple bridges efficiently transfer the vibrations of the strings to the soundboard. These newly designed bridges have been profiled to reduce mass resulting in an increase in energy transfer which produces exceptional bass response and treble transmission.

Iron plate

Computerized drilling (CNC) of the cast iron plate creates an accurate and consistent framework for precision scale design. Exact speaking lengths of the strings and duplexes result in optimal vibrations which produce a pure, singing tone. Open areas of the cast iron enable greater resonance coming from the soundboard.

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Soundboard 

The European solid spruce soundboard delivers not only a wide dynamic range but also delivers PETROF’s characteristic romantic tone. Measuring in at 2,253 m2 of surface area, the AP 275 contains sufficient power to fill      any concert venue.

Wooden frame

The solid beech wood lattice frame ensures the structural support to resist the nearly 20 tons of string tension.         This robust design is built with rigidity for longevity.

Key bed 

The key bed is a three-layer cross-grain laminate of solid wood that creates a stable environment for consistent         and even action regulation which is sought after by the most discerning pianists.

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Bridges

Both the bass and treble bridges are made from solid maple and feature a wider soundboard “apron” at the base which more effectively transfers vibrations from the strings. This hand-carved spruce layer in between the soundboard and the bridge in essence acts as an expansion to the soundboard and produces exceptional bass response and treble transmission. With an enlarged soundboard expansion layer, the subsequent bridge mass is reduced resulting in minimized energy loss and increased bridge and tuning stability. The upper surfaces of the bridges are hand-notched and hand-drilled for bridge pins and coated with graphite for low-frictional movement.

Iron plate

Manufactured in local Czech Republic, the grand plate is made from traditional grey sand cast iron. It features 6 longitudinal braces and 1 transversal brace for maximum structural integrity. The cast iron plate is computer drilled (CNC) after which it is primed and finished by hand before being glazed with gold metallic lacquer. Computerized drilling of the cast iron plate generates an accurate and consistent framework for precision scale design. Exact speaking lengths of the strings and duplexes result in optimal vibrations which produce a bright, singing tone. Open areas of the cast iron enable greater resonance from the soundboard.

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Soundboard

The soundboard is made from solid European spruce wood. Diaphragmatic by design, it is
tapered from 9 mm in the centre to 6.5 mm along its perimeter. Total surface of the soundboard
is 1,712 m2 and contains 14 reinforcing ribs. The asymmetric crown of the soundboard has
extremely wide dynamic range and yet retains the characteristic PETROF romantic timbre.
With such immense power, the ANT. PETROF 225 is well suited for any concert hall.

Wooden frame

The solid wood beech frame provides a high degree of rigidity built for longevity.

Key bed

The key bed is a three-layer cross-grain laminate of solid spruce wood finished with a layer of
beech wood (47 mm thick). It is additionally reinforced from below with solid beech wood beams.
This creates an incredibly stable environment for consistent and even action regulation which is
sought after by the most discerning pianists.

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Action

Renner-ANT. PETROF. For the highest possible action stability, there are four action bracket used in the AP 136

Bridges

Dense maple wood bridges facilitate excellent transmission of strings vibrations to the soundboard.

Key bed

The solid key bed (45 mm thick) made out of cross laminated birch wood provides structural integrity of the instrument. This ensures longevity to action regulation and accuracy for pianists.

Pedals

These new ergonomically designed solid brass pedals are made to simulate more of a grand piano feel. They are wider, lower to the ground, and incorporate a fully adjustable wooden mechanism.

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Iron plate

Computerized (CNC) drilling of the cast iron plate generates an accurate and consistent framework for precision scale design. Exact speaking lengths of the strings result in optimal vibrations which produce a bright, singing tone.

This full surround frame also contains more open areas which enable greater resonance coming from the soundboard.

Soundboard

The newly designed, European solid spruce soundboard provides an incredibly full dynamic range while retaining PETROF’s characteristic romantic tonal color. It is called a “floating” soundboard which contains areas unattached to the frame, freeing the vibration of the board.

Wooden frame

The joint and tenon frame of the AP136 is what you would expect to find on high-grade finished carpentry. While the six solid spruce back posts are carved by computerized lathe (CNC) for precision fit, the frame is completely built by hand.

Cut-off bars

There are two cut of bars used in AP 136 construction

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FALLBOARD DAMPER

This elegant recessed slow-close fallboard system is the same as you would find on a high quality grand piano. 


Are you interested in ANT. PETROF pianos?
Please feel free to contact us.

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Susan Petrof
President of the Company

e-mail: ceralova@petrof.com

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Said Tabet
Commercial director

e-mail: tabet@petrof.com
tel.: +420 602 419 477