Question / Help HELP with audio using Astro a40’s while streaming off Pc using Ps4.

[Hennygz]

I’m having an issue that i haven’t solved for a couple months. I use Astro A40’s w/ Mixamp. And i also have a blue snowball mic. When i try to talk on the mic on the Astros there’s always an echo.. I’m assuming since both mics are picking up my voice ( both Astros & blue snowball mic ) BUT the point that I’m trying to get to is HOW can i just use my Astros A40/Mixamp as a Mic so my stream can hear it while also allowing me to hear my notifications from my pc/obs alerts. I don’t mind not using my blue snowball mic. Please help