I have had the Odyssey Khartago monos here for a few weeks, a friend owns them.
First off, Klaus does not have any idea how to package the amps for shipment. This lead to bent WBT binding posts on one unit so Mike hauled the unit over here for the parts swap.
I replaced the McCormack DNA-1 with the Khartagoes and we happy with the sound. There was little difference in the sound power through Magneplanar MG-IIIa speakers between these two amps. The sound of the amps were both very pleasing. Later I had the McCormack of VA R-1 Revision done to the McCormack and this upgrade provides better bass and more clarity. This made the McCormack better than I remember the Khartagoes, but these are both great amps. I'd be happy with a set of Odyssey monoblocks.