Weinbach upright pianos are produced as an affordable option for all players.

They are designed by Petrof's research and development team, according to strict technical specifications from the company's Department of Construction and Technology. Weinbach pianos construction is supervised by Petrof workers.

Imported semi-finished products, such as acoustic elements with strings, cabinets, pedals and pedal levers, are supplemented by the Petrof keyboard, action of European origin, hammers and other materials. The Petrof keyboard is made of tangentially cut spruce joints, with a Polyplex covering on the key. Ebony is used for the black keys of all instruments.

The pinblock is made of laminated beech and high-quality Abel hammers are used.

There are two models of Weinbach upright pianos, both the Weinbach 118 G1 and the Weinbach 126 are suitable for beginners, non-musical schools, musical schools of a lower level and hobby players, while the 126 can also be used as an accompanying instrument.