Routing example

Audio Interface FocusRite Saffire Pro 40
Input Source Windows applications in stereo format
Output 4 analog channels
Method Internal loopback


We want to use EKIO to filter the stereo stream generated by Windows applications. EKIO processes the input stream into 4 analog channels, which are then sent to four amplifiers.


The proposed solution is as follows:

It is performed with the following links:

Link 1:

PC applications utilize standard Windows audio drivers (WDM, DirectSound, etc.). The audio is sent across 2 channels.

Link 2:

In order to direct the stereo signal received from Windows to ASIO inputs, we use the loopback channels of the card. The Saffire Pro40 router automatically sends these channels to ASIO IN. So we connect:

DAW1 ➜ Loopback 1

DAW2 ➜ Loopback 2

Link 3:

Within EKIO, start by choosing the Saffire sound card. Then, select the relevant inputs. The list of inputs includes all physical inputs and loopback channels. Choose Loopback entries 1 and 2, equivalent to channels 19 and 20.

Link 4:

For outputs, 20 DAW channels are available. However, the first channels are occupied to receive audio from the Windows audio driver (e.g. WDM). If Windows is set for 2.0 output, channels DAW1 and DAW2 are in use; for 5.1 output, channels DAW1 to DAW6 are in use; and for 7.1 output, channels DAW1 to DAW8 are in use.

Avoid these occupied channels and configure EKIO to output on channels DAW9, DAW10, DAW11, and DAW12.


Disregard the names assigned to the output channels, as they replicate the physical output names and do not reflect the current routing.

Link 5:

In MixControl, connect the physical outputs as follows:

DAW9 ➜ Monitor Output 1

DAW10 ➜ Monitor Output 2

DAW11 ➜ Line Output 3

DAW12 ➜ Line Output 4

Link 6:

Connect the sound card analog outputs 1 to 4 to four amplification channels.