I also have the ProAc Response 1s, with an Audio Refinement Complete integrated. I'm using DH Labs Q10 shotgun bi-wire (four separate cables) and am extremely happy with the combination. I think an external bi-wire 15' setup would come in somewhat under your budget.
Suggestions for 15 foot Bi-wire cable under $1K
This is for a high-resolution, low-volume office system where detail, clarity and transparency on exclusively classical music is the requirement. System: Jolida JD 100 Mod 1 with Amperex Bugle boy tubes (instead of so-so EH that Mod 1 from Underwood come with, Creek 5350 SE, Proac Response 1s (still playing with i/cs). Please recommend used 15 ft bi-wire s/cs at about $1K. All the silver nitch companies I've tried i/cs from - RSA, Pure Note, Pursang, Empress cost more than $1K to bi-wire, although I'm sure they'd all sound good. Any others?
Thanks.
Thanks.