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Is there a difference in sound quality when streaming TIDAL Vs CD player

I hard wired my modem located in my family room using Cad6 cable to my Apple TV and direct wired my Apple TV to my ARCAM AVR550.  I have an OPPO 203 connected by both an RCA cable and by HDMI to my ARCAM.  

The dealer I purchased my ARCAM from told me to play my CD’s through my RCA connection and to watch DVD’s through HDMI.  If I listen to CD’s through the RCA, aren’t I using the DAC on the OPPO player rather than the DAC on my ARCAM and wouldn’t the DAC on my ARCAM be a better DAC.  My friend told me I should use a digital cable rather than an RCA to improve sound quality to utilize the DAC on my ARCAM?  If this is the case, wouldn’t the HDMI be the same as by using a specific digital cable?  I listened to my CD’s through the RCA Vs the RCA cable and I thought it sounded better through my HDMI cable.

i will be looking forward to your responses.

Thank you,
128x128larry5729
mzkmxcv
777 posts
 
Both Oppo and Arcam have good DACs. However, I don’t know how clean the analog inputs on the Arcam are; and seeing as analog is an afterthought for AVRs, so I would say I’m not surprised that going digital to the Arcam would sound better to you.
mahler123
3,354 posts
 
I have an Oppo 203, and the DAC is decent, but I only use it as a transport when playing CDs , preferring the DACs contained in my Anthem AVR.  If you use RCA cables to connect your Oppo to your Arcam, you are correct in that you will be listening to the Oppo DAC.  A digital cable is needed to send a digital feed to the DAC of the Arcam.
    The second question is which Digital cable?  Should you use HDMI, toslink, coax, or something else?  You will get proponents of each here...
  My advice is to experiment.  Hook up the Oppo to the Arcam with both RCAs and whatever digital cable you have handy.  I am guessing that you already have HDMI so that you can use the Oppo as a video player.  Listen to the CDs yourself and decide what sounds best.  If you wish to try other digital cables besides HDMI, you can get decent cables for around $20
big_greg
6,639 posts
 
I have a dedicated CD player and rarely use my Oppo for listening to music, and when I do it's mostly streaming of the music files on my network, but when I do I have it connected by coax (rca) to my Auralic Vega DAC which results in much better sound quality.
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