Audio sonically sounds different when.......

Ok looking for some input here. Last night I was mixing monitors on my 112 and when I solo’d
a track it sounds different than it does in the mix. I checked for phase issues and din’t find any. But the eq sounds good when I pafl the track but not so much in the mix. Any ideas?

Not enough information. Does the sound appear bad when you PAFL the mix or through the end device like IEM or wedge?

Lots of external things could affect the later.

Change the eq to sound good in the mix