I myself have tiled floor, which is really rigid and hard and should be coupled with spikes. However, among them there is a floor heating, ie a cavity creates additional resonances. Therefore I rubber doorstop set and thus can achieve a big difference in terms of precision under the supplied spikes.
The Karat 790.2 DC are incredibly strong momentum and resolve outstanding on (if you follow the above advice). One has to, of course, listen to the right material, not as common today highly compressed music that is hardly dynamic, but equally mastered very loud. The boxes are generally characterized as rather bright in tone, so they. A receiver, who is more than warm, such as Yamaha, harmonize best With my Yamaha RX-V3067, the boxes are so much bass that I need no additional subwoofer.
It should also be noted that the 790 DC is not the last but the last but one model was before the series ceased Canton. The last was the 790.2 DC that I myself have.