Ultra Diamond Resonators This is a totally new approach to "Mechanical Grounding". The 4" diameter x 1.5" body is made with from black African ebony with a 1/4" steel shank and tipped with a 1/4 carat natural diamond. This patented design contains a large volume of ebony reservoir for filtering distortions while the natural diamond allows for the instantaneous escape of unwanted vibrations. The resonating properties of this ebony when excited by the electromechanical energy will enhance the musical quality of its audio reproduction. These matched sets are recommended for all Pre-amp and Power amps, especially the very heavy units weighing up to 200 lbs. Using these will instantly expand the sound staging and increased separation. Tonal balance of the music will be much richer and hence a major step of improvement.