BEST INTERCONNECT FOR $25 EACH?

I win, haha:

https://www.proaudiola.com/product-p/1-m2549-rca-rca-1.htm

love and use this cable for DYI RCA. Upgrading the connectors is a big difference. Furutech 126g are excellent. 

Thanks for helping with my confusion TLS49!

I am connecting a Marantz 7704 preamp processor to an Anthem PVA 7 amp. I just ordered them both and they are in the mail. 

I need one cable per channel right?

If you want to connect all channels on the amp you need 7 analog cables.

Yes, one cable per channel, and preamp to power amp is definitely an analog audio signal.

Ok great, thanks guys. So I’m on the right track.

On Ebay I found a guy in Greece that makes Belden 20awg 8402 Shielded with a choice of rca connectors like the switchcraft 3502AAU and uses Cardas Quad Eutectic Silver Solder with Rosin Flux for $63 a pair. 

Unless you guys guys tell me that 20awg is not thick enough, I may have just found my connects. 

If there is enough savings maybe illnmake them myself but I need to price Belden wire and silver solder. If I make them myself is there a gauge you recommend more?