I’ve waited for the detachable mixer for so long 
it’s here !
If you own an iPad do yourself a favour and buy Duet which turns your iPad into an additional screen for your computer (even windows… probably not Linux).
Bonus features : it works wireless over WiFi (or usb cable if you prefer). Duet detects the iPad if it uses the same WiFi as the computer
Bonus feature : touch works (single only, tho)
So, you can lean back, or walk around adjusting levels and effects parameters
Even with a standard iPad, the resolution is sufficient (after touching a parameter just move your finger away to see what you are doing) if you own a 2018 iPad, it’s even better with an apple pen.
Finally, we have the ultimate controller at our finger tips… I can’t wait to mix a whole song !
