Amp for Facal flax


I recently moved to a new home which was prewired for a 5.1 system. I bought a nice looking focal flax 5.1 system for 2k. Now I Need an amp or a receiver to complement my speakers. I've been into high end audio for a while but never really ventured into home theater. I know focals can be quite forward with their titanium tweeter, so would like to take that into consideration. I also would like to use these speakers for streaming tidal into 5 channels. I have oppo 205, which could do this very well. I also have a separate preamp (krell KRC3) which I could use to bypass the Receiver/ processor.  I also have an old Mcintosh MX-136 paired with krell 5 channel amp which I'm currently using as a preamp for a separate 5.1 system in basement.

I'm not looking for a reference system. I have a decent stereo system for music in my dedicated listening room. I'm looking for a processor/amp/reciever that would take full advantage of what focals have to offer. I would prefer not to spend more than 2k, new or used. I don't need any latest atmos etc, just a simple 5.1 system. I heard that anthem and marantz are quite capable receivers. Any other ideas? 
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