Arc comes with an HDMI cable, and that’s great for use between  Arcana and Arc, for other cables, I’ve seen recommendations for KabelDirect, Bluejeans, and  others.  I’ve heard that the optical length is 6’-10’ for avoiding issues.  Make sure the spec of the cable matches what your sources and TV can do so it’s not the bottleneck.

I’ve recently gotten these, but honestly, I’ve never really had issues with any cable I’ve used.

I bought one of these last week to connect my DVR to the TV.  I figured that might be my weak link.  Because the previous cable was bought 6 years ago.  Then everything worked fine.  I’m using the Sonos provided cable from the HDMI-ARC port to the Beam.

I saw someone else on this forum recommend this before I bought it.  I liked the idea that it uses 26AWG wire.  

4K HDR HDMI Cable 8 Feet, HDMI 2.0 18Gbps, Supports 4K 120Hz, 4K 60Hz(4:4:4, HDR10, ARC, HDCP 2.2) 1440p 144hHz, High Speed Ultra HD Braided Cord, 26AWG
by Dreambirdie
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