I've got the S6 in a 2 channel system, as well as a pair of Monitor 7 v3. I do think they punch above their weight. They are not the only good speaker manufacturer, however. IMO, as you get into the higher end you'll find that speakers can produce more detail/resolution, and amps and cabling have more of an effect.
The first amp I paired with the Sigs made them awful bright sounding at higher volumes, an Emotiva XPA amp. After research, I tried a Parasound A21, and the side by side difference in sound showed me that all amps do not sound the same. I same to the same conclusion about cables.
The first amp I paired with the Sigs made them awful bright sounding at higher volumes, an Emotiva XPA amp. After research, I tried a Parasound A21, and the side by side difference in sound showed me that all amps do not sound the same. I same to the same conclusion about cables.