Digital to Analogue Converter for TV to audio system

Unlike my older TV, my present TV (a Sony 4k android) requires a DA Converter.  I solved this problem by using an inexpensive ($14) Prozor D/A converter.  Would it be worthwhile to buy a more expensive D/A converter, considering that the original source (the TV) has limitations for audio quality.  One brand I considered was a Music Hall that has outputs for balanced interconnects that would go into my ARC Ref 5SE pre-amp.  However, would this be a waste of money, in view of the fact that the source is the audio on my TV, which is certainly not audiophile quality?  The inexpensive Prozor actually works well so I would not want to spend the extra money to get a better D/A converter, given the limitations of the audio source--the TV.  I would appreciate any comments or suggestions on this issue.