I am developing a USB audio interface and for the headphones output I have selected the SSM6322 .
I have some doubts, the first one is what is the Input mA that the amplifier needs.
The second is that for 70 Ohm headphones what I should choose,
Figure 46. Circuit with Current Output DAC or Figure 47. Circuit with Voltage Output DAC of the datasheet.
Thank you so much.