PETROF ANT. PROF 136 CONCERT UPRIGHT PIANO Premier Upright/Grand style

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 the highest quality touch 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.

highest possible action stability with four action anchor points & and a floating European Solid Soundboard 

Technical specifications ANT.PETROF 136Depth   (mm) 646Width     (mm) 1543Height   (mm) 1360Weight   (kg) 320Soundboard material solid resonance  spruce  woodActive soundboard area (m2) 1,2039Ribs number, shape 11, asymetricSoundboard construction wedgewise tapered   9 mm in upper section – 7 mm in lower sectionPetrof sign on soundboard yesCast iron plate wet sand castingPetrof emblem on iron plate cast brassSurfacing of iron plate light gold metallic paint, diamond effectPin block – material multiplex beech plywood, density 800 – 850 kg/m3Wooden frame construction, material spruce wood, 4+2 postsCut off bar (corner cross rib) – material, number beech, 2Cabinet material MDF, plywood, solidwoodBridge – treble solid maple woodBridge – bass solid maple woodBridge pins steinless steel-ground tipsDuplexes – rear g² – c5Agraffes material – number brass, 88Strings – material steel wire Röslau Germany, copper winding Degen GermanyHitching of plain strings doubleDampers – number led-70Action Renner-ANT. PETROFHammer heads RennerKeyboard PETROFKeyboard – material tangential sawn spruce wood,   individually balanced with leadKeys balancing, touch weight 53g in bass – 51g in trebleBlack keys ebonyPedals     left – Half-blow pedal,     middle –  Muffler (moderator) pedal,     right – Sustein pedalCastors     yesFelts colour     redHydraulic slow close fallboard mech.     yes

Antonío Petrof

Antonín Petrof laid the foundations of the factory –

now one of the most significant producers of acoustic pianos in Europe – and recalls the tortuous destinies of all six generations of the Petrofs and of the master piano-makers who work to this day in this honourable craft and family tradition.

1839

BIRTH OF THE COMPANY FOUNDER, ANTONÍN PETROF

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 original and unusually robust body construction 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 make the piano similar in feel to a concert grand.

“The upright piano ANT. PETROF 136 can be easily called a miracle in its class. Such strong, balanced sound and quality of tone, especially in extreme parts of the keyboard, are unprecedented for upright pianos. The higher positioning of the keyboard suits me very well. I also appreciate other features of the instrument – two-degree cover opening or divided upper frame. I like the instrument a lot, I would be happy to have it at home. I give it five stars.
Petr Malásek”

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

Bridges
Maple wood bridges facilitate excellent transmission of string vibrations to the soundboard.

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

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 full range of adjustable wooden mechanisms.

Iron plate
Drilling of the cast iron plate on the CNC machine 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.

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

Soundboard
The newly designed, light, tight-grain European solid spruce soundboard provides an incredibly full dynamic range while retaining PETROF’s characteristic romantic tonal colour. some call it 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

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