Korg's nano range of USB MIDI controllers have been around for many years. They offer configurable MIDI control at an affordable price. The latest in the series are the nano Studio - with the nanoKEY and and nanoKONTROL. These offer the same budget control, but with the addition of wireless Bluetooth MIDI in addition to the standard (class compliant) USB controller.
Gaz Williams takes a look at them both with a special focus on using it in native Korg Gadget app control mode.
nanoKEY Studio £109 $149.99(+/-)
nanoKONTROL Studio £110 $149.99 (+/-)
Gaz Williams has one and he brought it round
Using Chains and automation to switch keyboard setups