I have a Marmot jacket (very lightweight, but essentially water- and wind-proof, so any insulating layer underneath will keep you warm while keeping the jacket

I have a Marmot jacket (very lightweight, but essentially water- and wind-proof, so any insulating layer underneath will keep you warm while keeping the jacket itself lightweight enough to prevent overheating on warm-but-inclement days) that features a breast pocket that zips vertically and is large enough to hold my iPhone 13 Pro Max. It has a small hole on the inside surface of that pocket that allows you to route a wire inside the jacket and connect it to a device in the pocket. If you need to manipulate the sound device, unzip the pocket and pull it out, do what you need and put it back.