Blue Jeans Cable Sound Good???

Without listening to the cable, is there any way to make a good choice of which cables to purchase, like amp power, receiver and speakers on regards to ohms, speakers etc...

Yes, IF you know all component factors regarding impedance, both in and out, frequency and dynamic response, of all components and cables, have a good mapping of the room, know what is wrong, have a trained ear and experience tuning systems and rooms. Being good at math also helps <vbg>

Pretty much skotches all advice here, online and most audio shops.

P.S. BJC make a good product. If you are using balanced XLR with out screen lifted at destination end, shame on you. It could account for the grunge.

Ieales, thanks for the answer.  That's quite a bit of info to factor in and probably not for your newb like me to figure out. What do you mean by xlr without screen lifted at destination end?  I do have rca out to xlr on amp.
Thanks

For your configuration, assuming the amp is a balanced input, you should be using a twin or star-quad cable.

At the RCA, screen and -ve connection are to RCA Gnd
At the XLR, pin 1 should not be connected to screen

If using twin or star-quad cables, RCA connectors should only have the screen connected at the destination end.

My amp is a bat vk200. It is a balanced amp. As far as the connection goes, all I know is it is rca to balanced. I need to look at cable, I believe it is analysis plus. Its 20 yrs old.

Ieales...total newb here...can you please define "screen"?
Thank you.