Steingraeber-Ferro-Magnet Action®

The touch of grand pianos and that of upright pianos are fundamentally different. For example, a grand piano action allows fast repetition due to the horizontal direction of its mechanism. Such repetition did not used to be possible in upright pianos with common piano actions. However since 2007, Steingraeber & Söhne has been offering a ‘grand-piano’ feeling with fast repetition as a feature in its upright pianos. Four years of development led to the innovative Steingraeber-Ferro-Magnet (SFM) Action®.

The advantages:

  1. ‘grand-piano’ feeling with fast repetition
  2. enjoyable, soft playing experience
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See here a comparison of the action mechanisms “PS” and “SFM” by the pianist and performer Simon Vincent.

The 3 elements in the construction of the SFM Action® are:

  • Magnet No.1 underneath the hammer-butt leather;
  • Magnet No.2 located at the tip of the jack, is activated by magnet No.1;
  • No jack springs are used.

The SFM Action® is available on all upright pianos (Models 122, 130, and 138).

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