Before changing the sample rate position of the [COMPUTER/TAB] switch, recording software that’s running on your computer (e.g. Sonar) will need to be closed and the DUO-CAPTURE EX will need to be turned off for the sample rate change to take effect. After closing all software and turning off the DUO-CAPTURE EX, you can change the [COMPUTER/TAB] switch to the desired sample rate, turn the unit back on and then open your recording software (e.g. Sonar).