2much wrote:I've actually never came across a stream in 96 kHz.
Same. If you do, I'd love to see it.
2much wrote:So do the settings in Audio MIDI setup need to be changed accordingly to the different bit depths (16,20,24)?
No, leave at 16. The bitdepth is stored in the stream, and is decoded by the receiver, which will take the appropriate action. Passthrough is only a mechanism by which we send the raw bitstream to the receiver and let it do the decoding with it's (hopefully) superior audio hardware.