K&K has announced the launch of its first-ever magnetic soundhole pickup, the Double Helix! The Double Helix is a hum-cancelling, dual-coil pickup for steel-string acoustic guitars. It features a phase switch and a unique tone switch that allows players to easily change from a bright 'GLOSS' setting to a more substantial 'STEAM' setting. .
It can be used on its own or in combination with other pickups.