I realize I am late to this thread, but I recently purchased a pair of Omen Defs and are running them with a Wyred DAC-2 directly to Wyred SX-500 mono amps. Sound is absolutely spectacular (to my ears and my tastes). There are so many variables to system synergy -- associated equipment, and the most important aspect that is often overlooked, the room itself. I have the Omen Defs in an upstairs loft that is 15' x 35' x 8' -- these speakers like room to breathe. The final placement of the speakers was somewhat farther apart than other speakers I have had. They throw a massive sound stage, and with the Wyred gear, they are extremely fast, dynamic and smooth -- not edgy or shrill at all. I can't really comment on the lower octave as my room has a 'hole' in the 40 - 50 Hz range. I have a subwoofer to augment from 50 Hz down (have had to use that for every speaker I have had in this room).