Talk:Raspberry Pi Tablet Specification
I would reccomend usb-c (Possibly via a raspberry pi 4), a display out port, and hot swappable batteries
--Eric (talk) 18:42, 22 October 2019 (UTC)
Did some research and it seems like an XLR in (and out possibly) would be the best for audio. Balanced 2.5mm seems like a good smaller option. Then you could get what is called a "plug in" wireless microphone receiver such as these on B&H
This would also allow for wired xlr in for microphones and mixing consoles
The "Fiio K3" would be a good audio out source (balanced 2.5 mm, unbalanced 3.5mm, coaxial digital out, optical (full size toslink) digital out, 3.5mm line out, usb c digital in
make an enclosure + port adapter/wire guide and this would add pro grade audio features to the device for ~$100 (make it an extra module for enthusiasts + music/audio professionals
For the XLR input the "IK Multimedia iRig Pre HD" 3 Pin XLR to Micro USB Audio Interface seems like a good solution. Phantom power, gain switched, replacable cables, 24-Bit / 96 kHz resolution, and android/pc compatibility, for ~$99. Yet again pricey, but it seems like the best option. Probably best mounted on the side as is, or put in a 3D printed slot.
https://www.bhphotovideo.com/c/product/1366293-REG/ik_multimedia_ip_irig_prehd_in_irig_pre_hd.html
For addition of modules to the base, as well as bounting options, I think a hotshoe mount on the top edge, and a screw mount (like those on standard tripods) on the bottom side, and rear face would be a neccisary addition to the overall design
For super high end audio users the zoom audio feild recorders like the Zoom F8n would be a great addition
Hope this helps with the #3 "wireless mic" requirement