The HFN-C models give you a sound that is much more realistic and acoustic than anything that you have ever experienced before. More realism in attack, more realism in overall response, these pickups actually allow your instrument to sound just as good plugged in as it does unplugged.The only thing missing from the HFN-C in a classical is the 'quack' that everyone has come to expect and accept in classical acoustic pickups. The HFN-C series for nylon string classicals and flamenco guitars is available in three basic model ranges: As the HFN-C Player (passive) which does not come with a preamp, as the HFN-C Active which comes with a single channel endpin jack preamp, and as the HFN-C Artist which comes with a two channel endpin jack preamp that can be run on phantom power. We offer the passive model of the pickup for use in instruments that already have a preamp onboard or for those customers that wish to use an outboard preamp.