Mevo START - Page 92

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It does not work when directly connecting lightning audio sources and adapters.
What is a TRRS plug?
The key factor determining if your audio source is compatible with the 3.5mm port on mobile devices is
the type of plug it has. It must exactly match the form factor seen in recent versions of the Apple
earbuds with the built-in microphone, as pictured here:

The red arrows above are pointing to three chrome rings and a chrome tip separated by three much                 
thinner rings. This is referred to as a TRRS plug (tip-ring-ring-sleeve). This is the correct type of audio                 
input that iOS devices can accept.
Mobile devices cannot input audio with plugs that only have 2 or 3 chrome rings, such as those
pictured below:

A TS (tip-sleeve) and TRS (tip-ring-sleeve) plug. These are not supported as audio inputs.
Mevo Start User Manual
Page 92