I have Focals and agree the setup is important to realize the benefits without being fatiguing. I didn’t audition Coda but I actually moved from Mc to Luxman monos to improve detail/clarity without the harshness I found with several other comparably priced SS amps. Coda is certainly a great quality product. Before considering a change I would offer a couple of suggestions.
1) First refections are always important but especially with Focals.
2) I don’t have experiece with Audience speaker cables but consider Cardas Clear Reflections. Typically a great fit with Focals.
3) Same comment on pc’s and interconnects. Clear Reflections may be better fit than Cardas Clear for example. (Also lower price option, sacrilege I know!)
4) I would not consider positioning speakers way off axis a good fix.
5) I found material benefits from speaker isolation, in my case Townshend Platforms.
Hope some of this may help, good luck...