Looks like keyboard and iPad. I have a technics p30- add an iPad or Android over midi you have this.

(Personally I would use apple logic- so need some sort of laptop- hopefully iPad pro runs OS X)

I am sure they pay for themselves. Solid gold keyboard will pay for itself after enough time. ; - )

Most large productions are run off laptops- many more possibilities.

But I understand- very large keyboard makes keyboardist play and look much more professional. Like having a large camera. Size = professional.

Large knobs and sliders remember. They need to be large.

I don't think I am being sarcastic. As with photo gear - bigger makes more impression for clients. Big knobs are good for marketing people- so are flashy lights, etc.

Anyway. All keyboards do the same thing. You press and hear a note. Control sliders are similar. Map the value to something that is useful and you have it.

Considering that this is P-V, and here we discuss alternative approaches to high end problems- (such as using cheep camera for production use- or "b" cam) I think that it very relevant to point out that same outcome can be achieved as korg with a good hammer action keyboard- laptop and motorised sliders (preferably something from behringer as they are cheepest).

That way you get very good mountain bike and very good speed bike.

So the same can be achieved- just not as well. ;-)

For real performances if you are not real die hard software techie and styles tuner (spending big amount of time for finding new voices and editing styles) it will be significantly worse.

As all styles in arrangers are made for specific hardware with specific voices and many many other specific things.

Also I dislike MIDI for playing back sounds like guitar or trumpet.

Well, all of good arrangers have their own nuance controls (some of them can be auto) and such, not so deep as soft synths, but much more ease for use. And midi is just protocol, you can add control of any number of parameters. People use specialized controllers to play wind instruments, same is true for guitars (via midi oriented guitars or via multi string pickups connected to guitar synth).

I had the pa3x and sold it ,as I mainly produce music in studio environment now ,I found more software type samples and vst to be much better for studio work ..for live ,it was great especially the mixer slider and multi outputs ...I think if they do get to a level where it could hold multi gb of ram samples and fast set loading time it could be of use for me ,as I still find it much faster to sequence styles or patterns in arrangers rather on cubase and vsts

I produce in the studio every day, often up to 9 or 10 hours, mainly composing and arranging, have done so since the Atari days and the first C-Lab Creator. I literally use bucketloads of VST...both synths and plugs I had the Korg M3 ...it was a nice machine...and had some great sounds (I also had the RADIAS board in it) , however I found it a nightmare to program anything on mainly because of the screen size...kind of like looking thru a 3 inch window and trying to figure out what a world scene outside looks like...very restricting. iPads are better...but not much better, they are more or less the same. I concluded that these days you need at least a 24' screen to do anything half decent in terms of "finished product" with decent control. It was OK using smaller screens in the old days when basically you put midi notes in and some CC events etc...but these days when there are so many plugins that you need to automate (and it makes a big difference too the end result), its not uncommon these days in a solidly produced track to have as many tracks of automation as there are tracks of notes or even wave files recorded directly in the DAW....its horses for courses tho. For some this machine will be a gem, for me it would not work because of the above reasons.

@Vitaliy_Kiselev Yep I know that, neither was the Korg M3...basically aside of having synths, it had drums, sequencing, mastering effects, track effects.... loads of stuff and also limited loading of your own samples. But this is the problem with these workstations, they could be awesome for live work and some types of studio work, but the problem is as soon as you want to do any serious composing the size limitations of the screen will make something that is not very hard...it will make it a lot more difficult. In other words you will have to constantly switch thru pages of info, sequencing, sound, effects etc...to get where you want...and then back again. The more the workstation can do...the more sounds and versatility it has, the worse this problem becomes...because there is only so much you can put on a small screen, same with the iPad, fine for emails, making notes, watching movies, but no good for serious musical work...not in my books anyway.