Hi Robert, > What version of LabVIEW are you using? 7.0
> but it looks like you have more of a hardware issue/question. Exactly. I'm looking for hardware recommendations for stereo microphone input card hardware that works with the LabVIEW SI vi. I have it working with my mono card, but I want to upgrade to stereo. Before I buy the hardware I'd like to know what has been sucessfully used. Thank you, Les