Bi-wired configuration: two connectors at the amp end, four at the speaker end. ^^ The best terminations in the industry: our unique ultrasonic welding process fuses the copper wire directly to the brass banana or spade connector, with no intervening metal, no compression sleeves or setscrews. ^^ Star quad cable configuration reduces EM field around the cable for reduced interaction with other system cabling ^^ Assembled in Seattle, Washington at our own cable shop, using BJC's proprietary connectors and Sonobond welder. ^^ Our locking banana plugs give the best possible engagement between plug and binding post; advancing the locking collar tightens the splines to the inside of the post.