Azrehan:
I love the idea of added on speakers or microphones for music recording and playing. I’m a musician and would love to be able to record better sound and listen and play back (jam, if you will) without plugging in to a secondary listening device. I have a big jambox, but it’s not always ready and charged when I need it. I’ve tried apple tv airplay, but this has huge lag, and a 3.5mm to rca jack to my stereo keeps me chained to a room. It would be great to take an acoustic guitar out to the forest and record some multi track guitar parts.
It would also be cool to be able to go to a friend’s concert and record a few songs for them on your phone that didn’t sound like a rat in a tin can so they can put them on youtube.
I can see other huge benefits with this design from input DI devices to plug in a guitar or midi synth (like I can with the camera connection kit on my ipad, but better) to wide angle or macro lenses for photographers, even little selfie screens on the back so you can see what you are taking.
The general problem with small speakers is they only have so much response, regardless of how many you have.
Phones have already done a decent job of this by building 2 big speakers in and working to create as much back volume as they can in a tiny space.
For things like recording a concert - they already have accessories like this:http://www.bhphotovideo.com/c/product/1079351-REG/zoom_iq6_stereo_x_y_microphone.html which you can tell would never properly fit into a tiny rectangular footprint of a module anyways.
Being able to scale out the bottom of the device means you can create almost any size peripheral and still have it work. That’s challenging when you’re left with a ~60 x 60 x 5mm block.