Your Omega 7 speakers are speakers you can build around. I maintain that they are the sleepers of the Omega line and I actually prefer them to the Alnico models.
I would be surprised if your amp were not the piece letting you down. Even though the Omegas are higher efficiency and do not require tons of power, I just don't get that the amp is doing the Omegas justice.
When I had the Omega 7's, I was using a Prima Luna integrated with them. Over the years, I have moved equipment around and am now using a Heaven 11 Billie hybrid amp to drive Zu Audio Omen monitors. Similar enough, but not quite the same as your set-up. It comes with its own DAC and phono input, so a good number of options.
Lots of reviews out there, including YouTube.
Rich