You know what It is it's the Qutest that takes the Burson to a higher level because of the 3 volts RMS . You get way more power and clarity by giving the soloist a high end DAC. The Qutest is not cheap and for good reason . I have heard very expensive Macintosh solid state amps with MOSFET design and it doesn't slay the Burson with the Qutest. Lots of solid state amps sound very similar . the only differences are that some solid state amps are more resolving at higher volumes. I like to listen to my music very loud provided I have awesome recordings. The Burson you can absolutely crank with the Qutest. Has a ton of resolve, but again You need a great DAC .