Hey guys, I have a device plugged into my microphone port on the card with a volume potentiometer on it. It is supposed to fade smoothly but it doesn't, instead it goes silent for like a full second and comes back. There are some other toggles on the device and they behave similarly, especially at higher volumes. I'm wondering if this is just how the cards circuitry is meant to behave, or if this is a fault like I suspect. I've tested to ensure it is definitely the card itself doing it, and the behavior is consistent across both devices I've tried. Works perfectly fine, but completely loses signal when the volume is being adjusted with the potentiometer, and then comes back a second after it stops. 

The device is a guitar. It works perfectly aside from the cut out when adjusting the volume fader. And yes you are correct I'm looking for a smooth continuous adjustment in signal level. If you can help explain why it behaves this way and offer advice I'd appreciate it, thanks

It's just the normal Nu Audio Card from what I understand, its not the pro or the surround or anything like that. I'm plugging the guitar's 1/4" cable into a 1/8" adapter and then directly into the microphone port. The adaptor is just an analog male to female step down so it can't be the problem given there is sound in the first place. The problem is not software specific as I can see it when monitoring the windows device directly, which is why I suspect it is happening at the card level. The reason I use the microphone port and not the line port is because guitars produce a low voltage signal which is essentially at microphone level, and require amplification. When I plugged it into the line port it was simply too quite. Since the microphone port is designed to handle and boost low signals there shouldn't be any issue with it taking the guitar signal in theory, unless there is some practical limitation on the circuit being used. It does a great job too, aside from the cut out when the potentiometer is being adjusted.

Please let me know if you need any more information from me, and thank you for the help, really appreciate it.