Why integrated and what are your sources? Based upon your listening and the power requirements of the AAD's I would recommend tube based mono blocks, like the VTL MB125's. (I have no affiliation with the pair being sold here.)
Then depending on the number of sources you could get a great preamp, either active (tubes)or passive. Also do you have your source components? And dont forget cabling as well.
If thought out you can get a real lot of bang for the buck
Then depending on the number of sources you could get a great preamp, either active (tubes)or passive. Also do you have your source components? And dont forget cabling as well.
If thought out you can get a real lot of bang for the buck