Best Digital RCA cable under $100 new or used?

You might consider the DH Labs D-75. It is a good digital cable, and it is less than $100 for 1.5 meters. You can find reviews online.

Bryon

I have found the MAC UltaSilver+ to be a open and neutral RCA in my system. They out performed a much more costly RS Audio Illume w/Eichmenn SilverBullet ends.

Hi Hoopster

For under $100 if you can find them I really enjoy the McCormack/Mod Squad Wonderlink J Digital Coax cable. A cable that I would buy myself but can't since I have the Wonderlink is the Black Cat Veloce Digital Coax cable. It is made by Chris Sommovigo.

Good luck with your search.

Check Cullen Custom Cables. A 1.5m will cost you only $55.
I bought two of these and could not ask for anything to do a better job.

For a little over $100 I found Joe Mazzaglia’s Auricle Audio Design Digital Standard cable to be excellent, and he offers a special intro price that might be closer to what you need.

http://auricleaudiodesign.web.officelive.com/product.aspx

Another excellent RCA digital comes from A'goner Acreyes but I don't know about pricing.

And as others have already indicated, digital IC length makes a big difference to the coherence of the music. 1.5m is optimum.