FarPlay works right out of the box, with no additional setup required — you can use it with your computer's built-in mic, and even over WiFi.
For best results, you should use a wired ethernet connection, which is much faster and more reliable than WiFi. This is easy. Your internet router already has ethernet ports, so all you need is an ethernet cable ($5 to $20 depending on length) and an ethernet adapter ($10 to $15) to connect it to your computer.
Headphones are required — they're essential for avoiding feedback. Bluetooth headphones come with a lot of added latency, so you'll need to use wired headphones. At simplest, the wired headphones that used to come with iPhones work great. Any headphones you can plug into your computer will work.
Good Internet Connection
FarPlay will work with most internet connections, but the faster your connection, the better your results will be. You can check your upload speed here. FarPlay has been successfully tested with upload speeds as low as 8 Mbps.
For the lowest possible latency, FarPlay establishes peer-to-peer connections between users. Please note that some institutions have network policies that make peer-to-peer connections impossible. In these rare cases, including some university networks, FarPlay won't be able to establish a connection. Workarounds include contacting the IT department of the university to enable FarPlay (feel free to put us in touch as well: email@example.com), or bypassing the institution's network by using a 5G connection from a cell-phone or a hub instead.
Mac, Windows or Linux
FarPlay requires a computer running MacOS 10.13 or higher, Windows 10 or higher (it may work on earlier versions of Windows but is untested), or Linux.
External Audio Device
FarPlay will work amazingly well with nothing but the built-in mic on your computer. But you'll get the absolute best results, both for latency and for sound quality, by using an external audio device. At simplest, this could be something like the Zoom H1n Portable Recorder, which comes with two mics for $120, can be connected directly to your computer via USB, and has very low latency. If you already have an audio interface, like a Focusrite Scarlett or a high-end one like the Apogee Ensemble, it'll work beautifully, as should any other audio interface on the market.