Symfonisk is based on Eneby 20, Max volume I tested was with a twin pair (As they do stereo pairing via Sonos.) You will probably hear better quality out of a pair like I did but post TruePlay tuning, it sounded very different before and after. In the smaller room of mine, Trueplay seemed to think it was too muddy sounding and tuned out a lot of lower end EQ. The notable Eneby 20 vs Symfonisk sound to me was that the Eneby had bass that seemed...not crisp? I don't know the right word but the highs in a drum line were not there. The vocals could have sharp highs but then you couldn't hit the stick hit the drum, just the sound of the drum. Despite the exact same drivers, Symfonisk had a WAY different profile that was more crisp and had more dynamic feeling bass. I wonder if the speaker's Z-Depth helps that.