Regarding the bass output of the Bifrost (I recently got the Uber), I can say that it can be subject to the cable used with it. Of course, this would hold true with all component, and I don't want to open a can of worms here, but.... I bought two different digital coax cables to try with my Bifrost and Sonos Connect player. The sound is noticeably different with each. One has both clearer highs and more bass output.
I am no advocate of megabuck cables, and know that some people will never be convinced that cables make a difference, but my ears tell me they do. (Also had my adult son take a listen as I swapped cables; he came to the same conclusion, unprompted.) Winner - DH Labs Silversonic D-750, $90.
I won't call the other cable a "loser" because system synergy may give someone else different results. System matching with components and cables making a complete circuit is IMHO an often overlooked and under-appreciated aspect of creating a great sounding system.
A digital cable that is not up to par will result in problems. Other than that perhaps the improvements in Bass and Treble might be Expectation Bias. One might ask, what is the property of such a cable that might improve SQ? Upon further examination the digital problems of synch and jitter results in audible defects. There should be no improvement to be had over a stream of digital data, either it's good or bad. Comparing audio is no easy task.
I'll meet you over at Jersey Freeze for Ice Cream.