Over the past four years I have heard Susvara on a large number of headphone amplifiers from renowned brands such as Chord Electronics, Auris Audio, Feliks Audio, HoloAudio, Ferrum Audio and others. Of course also with most of the headphone amplifiers from Burson Audio. Incidentally, my previous amplifier was just the Burson Soloist 3X Grand Tourer (2023). The new Burson Soloist Voyager beats all of them.