Can you not have a separate power amp below the desk or on a shelf that you don’t need to touch? Is there already a preamp or headphone amplifier utilized in this same install?
The power handling is just a maximum design power. No need to “match” anything there. I’d suggest to try it with your current amp first since the monitor audio is actually a bit more efficient. So it will play louder than the Miccas anyway.
I understand the AO200 is a substancial upgrade from the DA9. Someone had the DA9, AO200 & SA400 doing a side by side comparison. Might have been Z Reviews.
The upgrade was in sound quality with the AO200 over the DA9.
My understanding is they are essentially the same thing.
The AO200 is a unit that has the same circuitry as the da9, but fixed a few problems the early revisions of the da9 had, such as freezing display and noise from the lcd power.
Over a few iterations all of those issues were fixed in the da9. Mine has been flawless.
I actually never really understood why they have the AO200 and DA9 still in production. They are pretty much exactly the same. That’s my understanding anyway.
EDIT: Nevermind, I finally see the difference now. The AO200 has a USB input.
You will need to go into settings on the SA400 & change the fan start to a safe temp. The factory setting is 65°C which is insane/dangerous/way too hot to touch.