In my experience the Tambaqui is a highly recommendable DAC.
I compared it with my other DACs, lately I used the Susvaras, but most comparisons were done with the the Sennheiser HD800S or with my speakers (Magico S3 Mk2).
If I would be pushed to rank these DACs, that would be the list (first = best):
1. emmLabs DA2 V2
medium gap
2. Mola Mola Tambaqui
big gap
3. dCS Vivaldi (v2.x incl. Upsampler and Clock, I used Mapper 1, which is clearly better than Mapper 2)
small gap
4. Resonessence Mirus Pro and RME ADI 2 Pro FS R
very big gap
6. Resonessence Invicta
Additional remarks to the above list:
- I did not own all DACs at the same time. Only the Mirus Pro was my long time companion.
- each DAC was compared against the Mirus Pro.
- additional direct comparisons: Tambaqui vs emmLabs
- I was not able to distinguish between the Mirus Pro and the RME
- I found the difference between the Mirus Pro and the Vivaldi stack disappointingly small
In case you are interested, this is how I did the "as-blind-as-possible" tests:
https://audiophilestyle.com/forums/...qui-dac/page/10/?tab=comments#comment-1088073
Take it with a grain of salt, it's only my peronal experience and my ears are not young anymore.