Signature bi-wire speaker links Prices from £150.00 (UK RRP) An instant upgrade over the basic wire or pressed metal versions, commonly found bridging the inputs on bi-wire speakers. Featuring the latest, hi-tech ChordOhmic 4mm plugs/spades. Startling improvements to sound quality. Easy to fit. Signature links will work with any speaker cable. The design is based closely on the Chord Signature Reference speaker cable.