Petrof has also invented and patented a version of its new grand action that uses tiny opposing magnets on the wippens and wippen rail, called Magnetic Accelerated Action (MAA). These magnets significantly alter the dynamic properties of the action and allow reduced amounts of lead weights in keys as a side effect. Special magnets help to initiate only the initial movement of the action parts when the key begins to move from the rest position. When the key is fully depressed, the effect of the magnets disappears giving enough space to control the touch and dynamics by player. The result is agile action with faster repetition, less fatigue, and less physical work needed to reach higher dynamic levels. The action is adjusted in the factory for a standard touch weight and it can be serviced in exactly the same way as a standard action. Any additional adjustment is not recommended because it can change the proper dynamics properties of action. This MAA can be assembled in grands on a special order.

The Petrof company bought the licence for the Magnetic Balanced Action (MBA), which can be incorporated in Petrof grands. This system enables the technician to adjust key balance and change the key touch in the range of + 4 - 5 grams. The player can adjust the key touch very easily in seconds, according to a scale on the key slip, without any knowledge of this system. Using the adjusting elements, it is impossible to harm the mechanism.

Petrof has a large research and development department, which is very productive. In addition to the innovations mentioned above, in 2006, Petrof introduced the new 210 Pasat grand , which contains a myriad of novel and interesting technical features and presents a new design of Petrof grands. This grand piano was created as the first offspring from a new family of concert grands. The research department did many trials of different materials and their combinations, as well as calculations of string scales and their optimization. Then the development department designed the construction and built new grands between 2006 and 2008.

Petrof’s new grands have innovative scale designs, centered on greater acoustic output. Petrof respects the frequent requests of piano technicians for single hitch pinning so in the tradition of the world's finest pianos, these new grands are single-strung. Our new pianos are equipped with front and rear tuned duplexes (duplex scale) throughout the treble. Therefore, the iron plates were specially extended in the hitching zone. This single hitching can be used only on the larger concert grands such as P 210 Pasat, P 194 Storm , P 284 Mistral and P 237 Monsoon. The smaller grand models are designed similarly, with front and rear duplex scales, but without single hitching.

Duplex scales are the string sections in front of and behind the main active string. These strings sound in harmonic intervals with the main string section, enriching the tone and making it colorful and interesting. The anthracite coated duplex bridges are placed precisely on stainless steel base plates and define the sounding length of duplex sections. Anthracite duplex bridges correspond with graphitized bridge top caps. The descant bridge is done in the traditional Petrof way but there are some new materials used. The bridges are of solid maple, but the treble bridge is capped with solid ebony wood to increase sound projection of the higher frequencies. The selection of materials was the result of acoustic research and subjective aural tests. The final effect is the perfect transmission of high string frequencies to the soundboard.

The soundboards of new Petrof grands are again made in the traditional Petrof, but their forming is new, leading to better tone creation. The soundboards are tapered in a new way and have an asymmetric crown with asymmetric individually shaped ribs. This soundboard is more resistant to the pressure of the strings and it creates better acoustic performance from the piano.

Also the new Petrof grand's rims are created a little differently when compared with earlier pianos. Their construction looks the same at first sight, but uses materials that are entirely different. Some parts in the descant zone are made from solid maple, and a newly added descant beam is made from special plasticized and then compressed beech wood called lignamon. This material has a high specific density which means advanced physical and mechanical properties. This descant beam further stiffens the treble area to enhance projection of the treble tone. The front cross block of the inner wooden frame of the P 284, 237, and 210 models is reinforced by an inserted steel profile. Between this reinforcing profile and the front part of the iron plate there is an adjustable steel bolt, which transfers part of the iron plate loading to the robust wooden frame. The result is the iron plate is loaded less which greatly supports tuning stability. All these factors increase the rigidity of the structure for better tonal projection. Peripheral soundboard moulding of the rim is designed without any sharp arcs or corners which enables better vibration of soundboard. The continuous shape of the rim makes it easier to achieve proper slope of the soundboard mouldings and thus the soundboard is less stressed. The result is a very impressive sounding and playing instrument with a warm, rich, singing tone, full of color.

You can recognize the new Petrof grand models by looking at their interior. Their iron plates are bright gold, polished, with a “diamond effect”. The inner face of the rim is veneered with luxurious dark Makassar ebony with a streaked surface pattern, which contrasts with the bright iron frame. Using this rare exclusive ebony wood increases the unique impression our new instruments make, in conjunction with the flawless execution of scaling, single string hitching and the dramatic combination of contrasting red and black felts. The outer design of our new Petrof grands is still formal, and creates a noble impression.

For years, Weinbach pianos were made by the Petrof company and were virtually identical to Petrof grand pianos. In 2008, Petrof started producing Weinbach 198 grands in China as a piano for price oriented customers.

Petrof has been producing its more economical uprights in China since 2006, under the brand name Rösler for European markets. And since 2007 they have been produced under the brand name Scholze for Chinese markets. Uprights of both the brands are identical, designed by Petrof, and produced under the control of Petrof technicians.