We are always getting questions on what is the minimum device that one can use to support Audio Everywhere. Here are some of today’s answers to that question.
First, it is highly desirable that the Wi-Fi be 5 GHz capable. Thus you should look for devices that either tout their 5 GHz Wi-Fi or look carefully at the protocol they support. You want to see, at least, 802.11 a/b/g/n. The a is only there if it supports 5 GHz and the n means it support WMM, wireless multimedia, which is needed to correctly prioritize the digital audio packets we send. 802.11 ac is great, but not strictly necessary.
From a model standpoint, on Apple one typically uses either an iPod Touch or an iPhone. Apple has decided to stop supporting 32 bit systems, so everything is moving to having to be 64 bit. This means at least a 6th generation iPod Touch running iOS 7 or better or an iPhone 5s running iOS 7 or better. An iPhone 5 or 5c is no longer advisable.
For Android, for reasonable latency, one wants at least OS 5 (lollipop) and one needs to be careful to make sure that the phone or tablet Wi-Fi is at least 802.11 a/b/g/n. There are many inexpensive Androids that are running a modern OS, but only have a Wi-Fi that supports 802.11 b/g/n, i.e., no 5 GHz.