Testing iRIg HD and Apogee Clip-Mic Digital with CableJive lightning extender
Channel: L4LTV
Date: 06/08/2015

I have had a response from Apogee :

"Apogee's approach to converter design is quite different from other manufacturers audio interfaces and microphones in that it doesn't utilize gate, filtering or mute circuitry in the conversion path, as implementing these kind of circuits typically alter or compromise the conversion quality. Since we dont test or design our products to be used with every 3rd party extender device, I cannot say exactly what it is that is causing this to occur. I can certainly forward your findings to my engineering staff, however with the Clip-Mic digital (made by Sennheiser, with Apogee converters) reacting normally without the extender, there is no hardware fault with the device."

Which is fair enough as I will use these mics for different purposes in different contexts. Interesting though.