I will have a earphone connected to 1701 DAC. I want my product to be a high end audio product. I wonder if I have to add an external DAC to drive earphone( connected to digital output channel, not analog output )? If yes, why? and any part of ADI recommend?
Be noted that I am using ADMP441(MEMS Microphone) which outputs I2S to 1701. So the I2S format should be considerred here.