Are there any known modifications for the PS Audio Perfect Wave II dac ?

As per title.
I have a ps audio perfect wave II dac and was wondering if there's any known modifications for this unit.
And no my bank account does not extend to a perfect stream update kit 🙂

Or.

Am I better of looking at selling it and replacing it with something better ?
If so, Suggestions are welcome.

Ta.
 
Everything 😀
I mean nothing, absolutely nothing at all, other than the built in design flaws that seem to come with psa products.
But those have nothing to do with its sound quality.
I'm just having the typical thoughts of, if its good, can it be improved.