Speaker comparison "Magnepan VS Martin Logan VS Sonus Faber" (Headphone ...

Sound test: Magnepan MG2.7qr (with subwoofer Bowers and Wilkins ASW500) ; Martin Logan Aerius I ; Sonus Faber Concerto Grand Piano ; AMP: Abrahamsen V2.0up ;

Source: Cambridge Audio 851N ; Recording device Zoom H1N (Raw material).