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DAC/ Streamer - to upgrade or not to upgrade?

Dear Audiogoner:

With encouragement from Audio-Union , I like to seek further advice from those who are knowledgeable on streaming / DAC in accessing digital music. Currently I am connecting Roku 4  (accessing Tidal MCQ ) sending through its only optical out , to an optical-digital converter, then using  coaxial cable ( Siltech classic Anniversary Series model HF pure silver-gold Coaxial cable ) to a  vintage DAC (Altis Reference) at 48KHz. While the optical to digital converter may diminish the SQ, to my surprise the SQ from my streaming using above connection is only slightly worse when I compare to playing same CD music (whether classical, jazz or popular) using my CD transport(CECTl0) with Siltech cable connecting to the DAC. I had previously raised a question at this Forum about replace the Altis DAC which was positively supported by  some Audiogoner. I then tested Black Note DAC30 Tube Model in place of Altis and I found Black note was only slightly better in SQ to my ear. (By the way, my other equipment are Doshi Alaap V.2.1preamp, Lectron JH50 amp, and Minent  M7 speakers). I hope fellow Audiogoner can provide  advice on the following

1.       In order to improve CD  SQ more noticeably in my system when playing CD with CEC, what DAC would you recommend as the next step to replace Altis?

2.       On streaming,  I wonder if anyone has experience with Roku4? What streaming device (as next step upgrade) would be noticeably better when connecting to Altis? Would I need to replace both Roku and Altis to get noticeable improvement in streaming SQ? If so, what would you recommend?

Thanks a lot.

Sincerely

Moses 189


moses189
ghdprentice
7,027 posts
 
I would like to offer some helpful advice, it is a bit difficult when discussing a Roku… not really known as a streamer for audio. I suspect no one has used such a budget oriented streamer. I have streamed using iPods, iPhones, iPads, PCs, and finally began getting great sound with a Aurender Aries G2 streamer (~$4,000), muchly improved with a Aurender N100 at about $4K, much much better with a Aurender N10 ($10K)… and vastly better with my current Aurender WE20se ($22K). Streamers matter very much. While the streamer I have now may seem expensive, the moment I heard it in my system I was immediately struck what a good deal it was.


So for a simple minded look at the signal chain, this makes sense streamer 15%, DAC 15%, preamp 20%, amp 20%, speakers 30%. 
willgolf
936 posts
 
Ditch the Roku.  You never said what your budget is?  Lumin makes a great DAC/ Streamer.  The Lumin app is super easy to use and is also tied to Tidal and Qobuz.  I have had the D-2, A-1 and finally upgraded to the X-1.  The X-1 is the top of the line and well worth the money.  You can generally get one used for between $8-9k.  If you can't afford that then try the S-1.
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moses189 OP
23 posts
 
Thanks for all the recommendations and suggestions. My only comparison of Roku the way I described is with  Oppo 105, Microsoft surface pro i7 and my iPhone 11pro. The Roku seems to provide better SQ( when using  same Tidal source) . Will certainly try some of the other suggestions in the future. 
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