Help with system/ARC noise


Hi there!
Im new to this hobby and started to build my sytem. Currently i have an audio research ref5se preamp/ARC DS450 amp/B&W804D.  I hooked my oppo 105 to play CD and audio streaming using pandora. The problem is I'm getting noise and sometimes a loud pop of noise. I'm using audioquest yukon entry level xlr interconnects. All units are connected in individual wall ac. I called ARC and they said ARC ref5se and DS450 amp are compatible and should have no impedance issue and they already paired it before. I already isolated signal cables from power cables. My next step is to get a power distribution/conditioner and see if this will solve the problem. To old timers in this hobby:
1. Did you encounter similar problems and how did you guys solve it?
2. Any experience/suggestion on power conditioner to match with ARC with good result?
3. When hooking digital players like oppo or any cd player do you need to have a DAC unit even if the player has a built in DAC?

Any input is highly appreciated.



biggiglypanda
Yakbob-thank you for the heads up. Now i'm seeing hope lol! I will try to get a dedicated cd player and see if it will make a difference
I'm not sure if you have any hdmi cables connected to the oppo ( to send video to a tv perhaps?) if so, try disconnecting all hdmi cables before tracking down a separate CD player.

jond: you difinitely add something by making me smile and easing my anxiety with your awesome comment.

Update:

I reset my oppo to factory settings and download/update the firmware. So far I played CD playback for about 3 hours now and no loud popping noise. I hope it won't comeback.

When the oppo is on standby I can hear low hum on the speakers but only if I put my ears directly to the speaker.

With this development I plan to leave alone my oppo with my home theater set up and just invest in a separate CD player/DAC or a music steamer/DAC for my digital music.

Second: Invest in a power isolation/purification equipment to further reduce noise.

Third: work extra to support this addiction and the never ending list of equipment to complete my system lol!

Thank you so much for all your suggestions. It was a lesson for me and a lot more to learn.