the mini is just fine - some will load songs into RAM or use an SSD and claim a difference, but there are no valid tests on this
you do want to be careful about noise and ground loops
you can try using the Schiit Eigr or an iso Regen - both boxes have a trial period (2 weeks?) so you can test
DACs are evolving rapidly so look there next
Yggy for its price point or above - on Redbook
for $$$ take a listen to Phasure
you do want to be careful about noise and ground loops
you can try using the Schiit Eigr or an iso Regen - both boxes have a trial period (2 weeks?) so you can test
DACs are evolving rapidly so look there next
Yggy for its price point or above - on Redbook
for $$$ take a listen to Phasure