The System Output volume is the volume of the selected output device and in Voicemod only affects the monitoring volume of your voice (Be careful because it also affects the overall volume of Windows output if it's the same device). Enable the 'hear my voice' and 'voice changer' options. In Output devices select your headphones. Now adjust the slider to have a good audio signal avoiding the red part at the right side of the slider. In Input devices select your actual microphone. Check your Voicemod audio configuration.Please, see that your settings are as follows: Now, we will explain to you how to setup the Voicemod App. If you use speakers, the sound will feed your microphone and create a feedback loop that will ruin the experience. Keep in mind that for the proper use of Voicemod you have to use headphones. First of all, we would like to close all communication programs before setting up the audio stream.