API 500-6B 6-slot 500 Series Lunchbox

api 500 slotThe lunchbox comes standard with a +48 volt internal phantom power supply, bussed to pin 15 for interface with the API 512c Mic Preamplifier. API makes several modules for the 500-6B,The 500 Series, also known as the lunchbox format, refers to a standardized, modular audio equipment format used in professional audio recording and processing. It was orinally