Your answer was pretty much what I expected, though I would have appreciated a simple and cheap recommendation for an external audio interface. As has become the frustrating norm, Apple has taken a relatively simple, inexpensive issue, and made it a complicated and potentially expensive problem! I am so annoyed that they continue to diminish the standard capabilities of the iMac and MacBook by eliminating previously available functions. First, it was the inevitable loss of the CD/DVD player/recorder, then the loss of various input options, then the loss of the dedicated line/mic input, and now the loss of the the previously CHANGEABLE headphone jack into a line input. What could possibly be the reason for this? I mean, there is NO gain in external space, since the headphone jack itself still exists. And I doubt there was much internal loss of electronics. It was simply a short-sighted decision to eliminate ANOTHER convenience for users. Apple USED to be the company that made "all-in-one" computers that required almost NO third party hardware. But look where we are today. I have had to purchase a headphone adapter for my iPhone, an external Superdrive replacement, a couple of USB to USB-C adapters, a rapidly overheating Mag-safe charger adapter, and now a special external audio interface just to record my vinyl through my stereo in order to create mp3s. Thanks, Apple. You are rapidly ******* me off at a rate I thought unlikely when I first bought my Apple IIc back in the 80s.