Today's music production has become quite virtual. Not to speak of digitally sampled synthesisers and music workstations, there are virtual analog synthesisers, virtual acoustic instruments, virtual effecters and amplifiers and even virtual idol singers. However, sometimes we would miss physical touch.
My favourites have been Korg's nanoSERIES 2 trio, which look rather like some GUI objects just popped out of the computer screen than serious musical tools. They are handy and versatile with flexibility of choosing any combinations as you wish. The problem is that they are designed to function only one of them at a time when using with an iPad/iPad Mini.
I had looked around for the options which provide combined functionalities as a single device ideally with more decent feeling of playing musical instruments. There had been some attractive candidates but they all fell short in terms of portability.
Finally I found that most of the time a simple bus-powered USB hub does the job at least with two nanoSERIES 2 devices if you can tolerate the occasional "drawing too much power" error message and suspension. Also, inconvenience with only one or even no physical device does not do so much damage to the joy of being able to play iOS music apps anywhere.
Moderation is virtue.
