This preamp based on the vintage Musicman StingRay bass. It's very transparent and offers Bass and Treble controls. It's designed to give better control for any musician using passive pickups with an amp that doesn't have active tone controls. The preamp boosts the signal slightly to prevent tone loss when using long cables or too many pedals. The Bass control adds a deep punch and the Treble adds a high end sparkle- both of which are difficult to emulate when using passive tone controls. The sound clips below show the life the preamp can add to an otherwise dull sounding instrument.