You will need:
A10 Inline cable
Optical Cable, USB Cable.
First, Ensure the MixAmp TR has the most recent firmware installed by downloading the ASTRO Command Center here: http://www.astrogaming.com/customer-service/firmware-and-software/software.html
If your computer features an optical output, locate the digital optical output and set this as your default device. Right click the device and navigate to Properties > Supported formats. Ensure that Dolby Digital Live is enabled and DTS is disabled, if featured, and that the sampling frequency is set at 48.0 kHz. If your computer does not feature an optical output and you’re using only the USB cable to connect, locate the ASTRO Wireless Transmitter and set as default device.
Next, right click the speaker icon in your task bar and select “Recording devices” then locate the MixAmp TR and set as default device. Make sure to select the MixAmp TR in any voice chat program you’re using.
Connect your A10 headset to your MixAmp TR by plugging the Inline cable into the headset, and the other end of the cable into the port on the MixAmp with the headset icon. Make sure the volume wheel on your A10 Inline cable is turned up. You are now ready to use your A10 + MixAmp TR on PC.