All Odyssey amps double their power as the impedence drops. I would say it’s at least 200wpc. Depending on what options you get in your Khartago will determine the power output. The guy that designs Magico Speakers uses a Khartago in his lab, yes it’s that good.
Don't go strictly by the specs, it is the sound that counts. The power difference between a 180wpc amp and a 200wpc amp will not be audible.