i've owned many speakers (PSB Synchrony Ones, Martin Logan Spires,
PBN Montana EPS 2s, Revel F208, Sonus Faber Liutos and some high
quality amplification, Simaudio i7). My friend has a pair of Heresy IIs
in his apartment driven by a low priced Denon integrated. I've always
been pleased and amazed with the sound of his Heresy setup,
even at low volumes. They have a fantastic soundstage. Many times
sounds emanate far outside the speaker. Never felt they were harsh, just very lifelike. Admittedly, have not heard them at high volume in deference
to his condo neighbors. Overall, was very impressed by such a modest priced speaker.