To get more inputs on audio interfaces, you can: Make use of a mixer with audio interface features A StudioLive would undoubtedly suffice, but unless you also use it for performances, it could be overkill for a home studio. Aggregate interfaces Integrate a second interface with your current setup. Core Audio makes it simple to group interfaces on a Mac, whereas Windows' ASIO is unreliable for this purpose. It means that you must rely on Windows' built-in drivers. While Core Audio is widely supported, the newer WASAPI drivers offer almost as low latency. You will have to use the more cumbersome and antiquated drivers in this case. It's also inconvenient to use separate applets to manage each interface, and you'll need to give up an existing USB port to accommodate it. Add an optical interface Adding an optical interface is the best method to increase the number of inputs on your audio interance. This method is compatible with both Mac and Windows. For example, if you record at 44.1 or 48 kHz, you may add an extra 8 inputs per ADAT optical port, making this a very convenient solution. (You can only record four channels at once using 88.2 or 96 kHz, and certain audio interfaces aren't backward-compatible with optical audio at higher sample rates.)