Grace Design m701 - Production Interface and AD/DA Converter (16x16 Analog / 8 Mic Preamps / Dante)'Production' model m701 ships with 16x16 analog line I O (2x analog input and 2x analog output cards), 8 microphone inputs (2x microphone preamp cards), and the Dante option pre installed. The Grace Design m701 is a modular, high channel count audio interface designed for professional and commercial recording facilities. As their first foray into a complete interface design, the goal was to provide their very highest quality AD DA convertion