View source for Sennheiser Wireless Transmitter to Apple Lightning

[[File:Sennheiser CL1.jpg|link=https://en-hk.sennheiser.com/cl-1|300px|right]]Many of the Sennheiser Wireless Transmitters use a 1/4" TRS (3.5mm) TRS output connection.

To connect this to an Apple Lightning connection, use two adapters
# [https://www.apple.com/shop/product/MMX62AM/A/lightning-to-35-mm-headphone-jack-adapter Apple Lightning to 3.5mm Adapter] 
# [https://www.amazon.com/I-Coustics-Microphone-Headphone-Interface-Smartphones/dp/B00O2B76PK Azden HX-Mi TRRS Audio Adapter Cable for Smartphones and Tablets]

Notes:
The headphone adapter cable (#1 above) is wired for a TRRS signal, the usual CL 1 won’t work as it’s wired for a TRS connection. You can use a TRRS splitter, which allows a lot of versatility with the added benefit of letting you plug in headphones (super useful for playback.