Which interconnect cable to upgrade first

The biggest bang for the buck will come from replacing the one you have now that is the worst.

Thanks. Right now i’m using the same brand/model cables for both links. They are Kimber Kable Hero’s. They are actually not bad for it’s price. i was considering going up the chain to the Select or Carbon line, or possibly another brand like Cardas. i’m hoping to improve the soundstage and warm up the sound a tiny bit.

Anyone had made similar upgrade before? would like your opinions on these cables if you do.

Thanks.

IMO both at the same time. Getting a new one, while still keeping the old one in the chain will likely not reveal much on the new cable. Just my two cents

I would do streamer first, then preamp. 

I upgraded my interconnects starting the source to preamp and then, the preamp to amp.  My rationale was minimize signal loss as close to the source as possible.

I upgraded to Kimber Kable  - Kimber sells trade-in and demos on eBay and are easy to deal with.