--- title: Can I use two Quartets simultaneously? description: Can I use two Quartet's simultaneously? --- [Skip to content](https://knowledge.apogeedigital.com/can-i-use-two-quartets-simultaneously#main-content) English Show submenu for translations [Contact us](https://knowledge.apogeedigital.com/kb-tickets/new?hsLang=en) ![Apogee Logo White.png\]](https://knowledge.apogeedigital.com/hs-fs/hubfs/Apogee%20Logo%20White.png?height=40&name=Apogee%20Logo%20White.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://knowledge.apogeedigital.com/kb-tickets/new) - Go to apogeedigital.com Go to apogeedigital.com How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://knowledge.apogeedigital.com/?hsLang=en) 2. [Legacy Products](https://knowledge.apogeedigital.com/legacy-products?hsLang=en) 3. [Quartet](https://knowledge.apogeedigital.com/legacy-products?hsLang=en#quartet) # Can I use two Quartets simultaneously? Yes, you can connect two Quartets to your Mac and use the inputs and outputs of both units at the same time. This is done through Apple's Aggregate Device Mode feature in Audio MIDI Setup, within the OS. Note: Both devices must be directly connected to an available USB port on the Mac. **You cannot daisy chain the second Quartet from the first Quartet's USB MIDI port.** See "[Using 2 Quartet’s – Aggregate Device Setup](https://knowledge.apogeedigital.com/using-2-quartets-aggregate-device-setup?hsLang=en)" for more info. - [BOOM](https://knowledge.apogeedigital.com/boom?hsLang=en#main-content) - [User Guide](https://knowledge.apogeedigital.com/boom?hsLang=en#user-guide) - [Getting Started](https://knowledge.apogeedigital.com/boom?hsLang=en#getting-started) - [Troubleshooting](https://knowledge.apogeedigital.com/boom?hsLang=en#troubleshooting) - [FAQs](https://knowledge.apogeedigital.com/boom?hsLang=en#faqs) - [Duet 3](https://knowledge.apogeedigital.com/duet-3?hsLang=en#main-content) - [User Guide](https://knowledge.apogeedigital.com/duet-3?hsLang=en#user-guide) - [Getting Started](https://knowledge.apogeedigital.com/duet-3?hsLang=en#getting-started) - [Troubleshooting](https://knowledge.apogeedigital.com/duet-3?hsLang=en#troubleshooting) - 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