I'm in the same boat. I have the 2200W and I'm looking to add a integrated amp or power amp to drive the Hologram M4 speakers. I'm using Rogue Ares as phono stage.
I was researching and I think the best way is to add a switcher as https://www.amazon.com/dp/B00LNOAGZQ/_encoding=UTF8?coliid=I1W5UP80LZBHX0&colid=2X6K38KCTYS9Q between the Amp and the receiver. That way you don't need to change the receiver and you sound path is cleaner and simpler.
IMO it should work for you too
I was researching and I think the best way is to add a switcher as https://www.amazon.com/dp/B00LNOAGZQ/_encoding=UTF8?coliid=I1W5UP80LZBHX0&colid=2X6K38KCTYS9Q between the Amp and the receiver. That way you don't need to change the receiver and you sound path is cleaner and simpler.
IMO it should work for you too