Synergistic Research | UEF Performance Enhancer | A/C Power

Product Review (submitted on August 6, 2023):

Inserting the Performance Enhancer in the power strip of my second stereo system did not yield a convincing improvement immediately. The soundstage seemed to be somewhat smaller and the bottom end somewhat thinned out. Fortunately, breaking the unit in for a day was enough to get rid of this and to perceive obvious sonic improvements. Better retrieval of fine detail and a better organised, more spacious soundstage could not be missed. Most impressive however was how the unit removed unnatural hardness and edgyness from the sound. For most systems, the Performance Enhancer AC could very well be the best of its kind in this price range.