I would start with speaker placement and room acoustics. What’s on the floor between you and the speakers? Place an area rug if you have bare floors.
Move speakers to be about 4ft from the front wall. That should deepen the soundstage.
Treat first reflection points at a minimum since you already have bass traps. Diffusion or absorption on first reflection points should help widen the soundstage.
GIK Acoustics panels work pretty good
Power conditioner on source components should also help. Depending on how dirty your power is, lowering the noise floor will help the details emerge out of a much quieter background. You have decent power cords but it wouldn’t hurt to experiment. If you’re changing the power cords tackle the amp cord first.
I’ve found higher end Audioquest Storm series high-current power cables on power conditioner and amplifier make a nice improvement in my system.
I’m using AQ Hurricane on power conditioner and Tornado on amp. There are tons of other options you just need to try…after you get your room acoustics squared away. Just my thoughts. Have fun and good luck!