NAD C3050 - Ucd102 upgrade

Hello,
I just got a Nad C3050 along with its BluOS-D card.
So far I enjoy a lot the vintage look, vu-meters and most of all BluOS streaming.

Nad C3050.JPG


But I am not convinced by the sound which, although very neutral seems a bit thin-sounding, especially in the midrange.
Voices seem to disapear in the background, my previous Rega Elex-R had way more life.

I am considering swapping the internal Hypex UcD102 for a better module, as it seems to be plenty of space available.
(And I would like to avoid having a separate power amp. )


Hypex UcD102.JPG


Which module would you recommend as an upgrade? Or is there anything I coud do on the UcD board to improve it?
 
Lately I have repaired a few NAD and Bluesound devices but if there is anything that needs to be changed it are the low quality electrolytic caps (also the SMD ones) that are used by NAD/Bluesound. Also relays are often the cheapest China quality one can find. Main failure mode is most often failing caps.

The looks and the software are OK.