Planning a new audio shield: Your opinion requested!

  1. Microphone input connector, amplifier, and ADC (possibly internal to the FPGA).

By microphone input, do you mean an unbalanced, electret microphone input (like on a PC soundboard) or do you mean a balanced input for condenser microphones (in which case, where would you get the 48V for phantom power)?

Obviously these are at very different price and quality points, which in turn determines your target audience.