Voice Technologies IA-2 Adapter, combining adaptor for input of TWO Lavalier mics with 3.5mm TRRS connector into a Smartphone. *Works with the Apple® iPhone® 3.5mm TRRS socket to Lightning adaptor.
 
Connections: (2) 3.5mm TRRS sockets, (1) Headphone socket to short cable with 3.5mm TRRS connector
 
The IA-2 adapter allows recording of two people at the same time at identical levels on one smartphone.  Mobile journalists, podcasters and “Youtubers” get the chance to record interviews and segments with two people in professional broadcast quality with little effort.