I have just reached retirement age and will be shrinking my audio footprint! I have an amazing system that includes these Khartago/Kismet mono-blocks hand made by Klaus at Odyssey Audio. Odyssey amps consistently receive awards including 2018/2019 Absolute Sound awards and the award-winners don't even have the high-end features that these amps on sale have.
For sale are two Odyssey mono blocks housed in the Khartago boxes to save space and cost. They are decked out with the Kismet black motherboards ($5-7K for the Kismet mono blocks), and upgraded additional cap storage and transformer.
I feed these beasts with a NAD Master Series M51 DAC Preamp going directly into the Odysseys and outputting to my Magnepan 1.7 speakers. The sound is incredible with "in-the-room" vocals, amazing sound staging and 3d realism. The amplifiers are incredibly transparent and grip the Magnepans like no other amp I have ever heard.
Best comparison in sound quality is to the Pass Labs amps running class A. Warm, transparent, 3 dimensional, and full of instrument tonal saturation.
To get an idea of what these mono-blocks sound like, see the 6Moons Review of the Kismets at https://6moons.com/audioreviews/odyssey2/1.html
The author describes the capabilities of these mono-blocks very well. They show interior shots of the mono blocks so you can compare with mine.