Here's some things I'd like in a #DreamGroovebox

* Battery powered
* Works well in sunlight
* Can control at least 4 external, preferably 8 external MIDI devices
* A sequencer with at least 64 steps that can do program change
* Internal synths with polyphony
* A sampler that can change start point and maybe increase volume without distorting the sound

If this seems too much for a groovebox what might peeps suggest for a separate sequencer and sampler?