You can use internal clock when doing ADAT recording but this may cause sync loss problems. This gives up to 16 simultaneous input and output channels. There is a mixer that can be used to mix any combination of the input and output signals to the monitor port. In addition OSS supports the monitor port as an independent stereo output device. It's also possible to copy data directly from device to device.
Optical connections provide perfect isolation against noise emitted from the computer system.
Cheap 16 bit converters can be used while up to 24 bit high performance ones are supported. It's included in the evaluation licenses and needs to be checked when ordering the permanent license. The first device being created is an output device for the analog monitor device. There are separete sets of device files for both the output and the input channels. The number of devices being created depends on the selected mode.