Nordost Sort FütThe Sort Ft is a mechanically tuned resonance control device. It is purpose built to enhance the performance of your hi fi system and improve upon the standard spikes and stabilizers that are provided with loudspeakers and racks. Energy is an unavoidable byproduct whenever components are in use, creating vibrations which can greatly affect the sound produced. The Sort Fts proprietary four part construction eliminates these unwanted vibrations by