Yet, since you have changed your input device, nobody can hear your mic. Then, every sound playing on your machine will be heard by people in Voice Chat.
How do I get my mic to work on Discord? Open Discord, go to User Settings > App Settings > Voice & Video > INPUT DEVICE and select CABLE Output. Also, I don't think anybody at discord is going to read these. Which means, discord sends the output signal also via the same IO jack. FAQ about Output Device Discord University What does the output device on Discord show? The output device shows as wired connection.