Rupert Neve Designs Portico 5045 Primary Source EnhancerThe 5045 Primary Source Enhancer is a two channel device that is exceptionally useful at reducing feedback, effectively increasing the level a microphone can be raised before feedback occurs in a live sound environment by up to 20dB, without negatively impacting the sonic integrity of the source signal. With controls that are very simply laid out and generally require minimal adjustment, the 5045 is an invaluable tool for churches, stadiums,