jumia,
I do not agree with blanket statement that Lumin X1 is not liked by audiophiles, but do agree there are audiophiles that may priortize desire for additional and various inputs or other needs for their system. The X1 is an ethernet optimized combination streamer DAC. I am one of those people who like to have all kinds of options, but admit I may rarely, if ever, use all the options on the equipment I have, plus the expense of purchasing that way. The X1 is much more streamlined (no pun intended). You do have RJ45 ethernet input as well as fiber optic ethernet option (still rare, but a very nice option) for input. I pull music from Qobuz and from my local storage on my music server. The USB port on the X1, at least currrently, is for attaching USB music storage, not for a transport or other device. I have optical SPDIF connections on a variety of devices, but cannot recall when I last used such--been some years for sure.
My priority was not for connecting a TV to my 2-channel DAC. I have a hometheater prepro with potential of 11 channels and various surround sound codecs and DACS that I use for that. You could explore exaSound, for one, if multichannel higher end DAC is of interest. The Mola Mola Tambaqui does have multiple digital inputs. I suggest you download the Tambaqui manual, if you have not yet done so, to read on these and what bandwidth specs for each type and DSD compatibility. I currently do not use a separate transport. Though I do enjoy reading on new CD and CD/SACD transports, I have not pursued one--still have a CD/SACD player not now in use. Many of these new units have streamers and DACS themselves.
I do have other DACs with more I/O's, but 2 of them not currently in use--the X1 sounded better. They also require separate bridge or streamer for ethernet.
This level of audio is a significant investment, and there are a great many fine choices out there. There are multiple professional reviews out there on the Lumin X1, with some being far more informative than some others. If you have not read this one, it is a worthwhile read,
https://audiophilestyle.com/ca/reviews/lumin-x1-review-r860/?tab=comments#comments