GamuT amps have many attributes of good tube amps particulary with an excellent tube preamp. The secret of the GamuT is a single switching MOSFET output device which means no matching problems and a "single voice". I listen to my Gamut Mk.3 with the deHavilland Mercury triode tube preamp. My jazz, opera and classical music sounds extremely natural, emotionally involving and very much like the live concerts I attend. I am sure fine tweeking (refined cables,PC, vibration control, room treatment, purified AC) all add to the realism.