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USB-C hub update
I've been a huge fan of the move to USB-C on the iPads and had posted some results with USB-C hubs and extension cables. One downside of the hubs I've been using is that they required using some sort of audio interface for headphones.
Well, now there are options for USB-C hubs that have a USB-C data port in addition to the power-only charging port, and they support the Apple USB-C headphone adapter. This lets me create dedicated USB-C headphones that I can use on the iPad directly or easily switch to the hub when I want to charge and/or use USB accessories.
Here are the two hubs I've started using that have USB-C data ports:
Option 1: Cheap
Option 2: A bit more expensive, but SO MANY USB PORTS!!!
I was worried about this size of the second one when I ordered it, but it's still really compact: 120mm x 50mm x 12mm.

Comments
I’ve used the Apple USB-C headphone adapter on a Kingston Nucleum hub, and it works great.
another option is to use USB headphone sets. They are rather cheap and work with USB C hubs, and they have a microphone that you can extend or retract. Very good for vocoding.
@Liquidmantis these are good options, good call on using the Apple USB-C to 3.5mm adapter.
I’m curious if anyone has found any good USB-C hub that has a longer cable. Most seem to have cables in the 6” - 9” length and I would rather the cable be a bit longer so the hub isn’t dangling off the side of the iPad. Cable needs to be 0.3 - 0.5 meter length
The advantage of the USB-C adapter is that it’s seamless and doesn’t change the sample rate. Plus you’re set if you want to use it without hub. This is really just to replace using the missing headphone jack for lightweight use cases and doesn’t replace an audio interface when you want more I/O.
I have a few USB-C extension cables and right angle adapters that work great for dealing with the stupid micro pigtail on hubs.
Every now and then I look into getting a hub I fall down the same rabbit hole. I really just need one with a usb c port for power, a usb c port for the 3.5mm headphone dongle, and 2-3 normal USB ports. There seem to be some now that are all designed to fit onto the iPad Pro and have a headphone jack, but they’re more expensive and I then give up, paralysed by choice 🤷♂️
proposition: sell the 3.5mm headphone dongle, and get a USB-A headset. Then any hub with USB-C power and USB-A ports should work fine. Both headset and hub can be bought 2nd hand or new for not much money, and they will work. And you also will have a microphone from the headset.
Good idea but I have 2 nice pairs of headphones that I use. The solution I need exists, there’s just too many to choose from for my little brain to deal with.
Anyone has any experience with the PI 4 hub?
Would you consider this, over what mistercharlie is using? (the Apple USB-C headphone adapter on a Kingston Nucleum hub)
It's hard to find the right setup ( if i can call call it like that)
Just got an iPad pro 11" 256gig over the weekend, not even a USB c to 3.5mm in the box, tried 2 that I owned, but didn't work.
Got the apple 1 today, and it works.
So I am also interested in best hub options also if anyone has more to add
Thanks in advance
+1 https://www.kingston.com/us/memory-card-readers/nucleum-usb-type-c-hub
Thanks@mojozart
Looks great, but I also need a headphone socket,
for some reason my family don't enjoy listening to the same 4 bar loop for an hour which I am sure would be a number 1 hit ( in my world )
Actually planning on getting one. You can also run Reaper on the Raspberry Pi.
Sorry guys, my mistake, looked again, X2 USB c. So I can just plug in my adapter, so headphones happy
Many thanks@mojozart Think this could be the one. Pay day almost here