The BI Series Instrument cables were specifically designed with the bass guitarist in mind. The BI series cables utilize Quantum's Q-2200 series instrument cable which incorporates an oxygen-free 18-gauge center conductor and a 95% coverage served shield as to provide a more stable platform for lower frequency information transmission. The BI cables incorporate Switchcraft brand 1⁄4” phone plugs to provide one of the most reliable connections possible. The BI cable’s overall tonal response is tailored to provide a tighter low frequency response, a more sedate upper midrange and slightly rolled off high frequency range. The BI cable’s overall tonal response tends make this cable a viable choice for bassists who prefer a rounder sounding response, and guitarists who strive for a more jazz oriented, or vintage 50’s / early 60’s tone