Q: No "Built-in input" device on my copy of Logic

Make sure you have selected Built In Input in Logic's prefs > Audio > Devices > Input Device

Click the Apply Changes Button in that window...after selecting the correct input....

You have to plug a device into the combined port, before the system sees the port as an input device. This is new on the latest MBP's. And it is confusing.

Not sure how it is for 15 inch MBP though.

MacBook and MacBook Pro (13-inch): How to use the combination audio port for an audio input device - Apple Support

Thanks Erik for that little tip..

I wasn't aware of that and yes, i can see how that would be very confusing!

Cheers..

Nigel

That link provides a very clear step by step process.....

Which bit don't you understand?

The answer appears to lie here..... as it appears there was a hardware spec change for the Christmas 2014/2015 models....

The current Macbook Pro (2015) does not have an audio input jack? Only an headphone jack?

Time to buy a good quality audio interface I suspect.....

Yes.. Sorry about that..

I wasn't aware that hardware change had taken place..... and it seems a strange decision to say the least.... but it may be to do with the new chipsets used in those models...

That's just a guess however... I have no idea as to the real reason.

Cheers..

Nigel

Cheaper... and who needs an audio IN anyway. 

Clancy, you cynical old Bar Steward......

Thing is, you are most likely right too.......

Hehehe... That made me smile. It's a title I wear well.

Here we have a company with not one, but two very good audio programs, what will we do next Apple hardware engineers? Remove the audio line input, of course! Saves 15-cents per machine, that's why we give 'em loops and samples.