I don’t know anything about this amp other than what I read here, "Proprietary Class D implementation", not ICE or Hypex. I have heard it in action with a vinyl source, Moon phono stage and some BMW 702 speakers and I thought it all sounded really nice. I also know some dealers who have some really good deals on this amp right now. Let me know if any person is interested.
https://www.stereophile.com/content/class%C3%A9-sigma-2200i-integrated-amplifier
https://www.stereophile.com/content/class%C3%A9-sigma-2200i-integrated-amplifier