This preamp module has been specially created for acoustic instruments. It features two solid state preamp channels, with a 1/4"jack input for Channel 1, and an XLR input for Channel 2, designed to suit the pickups and microphone systems most-used by doublebass and acoustic bassplayers. The switchable 48V phantom power on Channel 2 allows you to use condenser microphones and other devices that require phantom power. Thanks to this preamp module, MoMark users can transform their head into a dedicated amp for acoustic instruments!