Voicemeeter is an audio processing application created by VB-Audio Software. It is a virtual mixing console and audio routing application that can be used to mix up to three audio inputs to three audio outputs with two physical I/O and a virtual I/O. It features advanced audio routing, audio effects, and a 32-bit virtual audio mixer. Voicemeeter provides users with a flexible and easy-to-use audio mixing solution for creating professional audio mixes. The application is capable of routing audio sources to separate outputs, allowing users to customize the output of audio streams to their liking. It also includes support for multi-channel audio, allowing users to control the levels of audio sources in real-time. Voicemeeter is an ideal solution for streamers, podcasters, and musicians who need a powerful and easy-to-use audio mixing solution.
similar software but with 3 hardware inputs (i.e. microphones) and 2 software inputs, instead of 2 and 1 respectively, also more EQ and recording outputs
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Voicemeeter Banana
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It is literally an upgrade for VB