BLE Design on eBay. 10 gauge OFC copper with good plugs for around $60 will work very well and save you $$ for more media. It sounds very good.
https://m.ebay.com/sch/i.html?_from=R40&_trksid=p2332490.m4084.l1313.TR2.TRC0.A0.H0.X.TRS2&_...
https://m.ebay.com/sch/i.html?_from=R40&_trksid=p2332490.m4084.l1313.TR2.TRC0.A0.H0.X.TRS2&_...