I think the Schiit Freya + is a great choice.
You will find that bass and treble controls become less prominent as you get to higher performance gear. They tend to degrade the signal and don’t actually accomplish what they are supposed to do. I have tried them repeatedly.
my rule of thumb is only upgrade by 2x or more… the Freya + fits and the Schiit is a great value for the money… I got one for fun… great value. You can see my systems under my I’d.