Each "cable" acts as an independent virtual audio device. While the free version gives you one (Input/Output), the C+D package adds two more independent drivers . This allows you to: Route Spotify to one cable (Cable C). Route Game Chat to another (Cable D). Separate Browser Audio
Use VoiceMeeter Banana (also from VB-Audio, free). It includes 3 virtual cables internally and is designed for advanced routing. vb-cable c d free download
| Product | Purpose | Price | | :--- | :--- | :--- | | | One virtual link between two apps | Free / Donationware | | VB-Cable Hi-Fi Cable / Hi-Fi Cable | High quality (up to 384kHz) | €4.95+ | | VB-Cable A+B / 2-4-6-8 Cables | Multi-channel or multiple virtual links | €29+ | Each "cable" acts as an independent virtual audio device