Just a few thoughts after using it on the job for two weekends and one private party...
Of course the drums and bass are wonderful, as expected.
I love the "natural" sounds, guitars, pianos, saxes, fiddle, pedal steel, trumpets, harmonica, flutes, organs... Those are the ones I use and I want them to sound like they are supposed to, and they do.
I'm becoming more familiar, or re-familiar with the operating system and it has some good features.
The huge touch screen has really great definition and it is very responsive as well. It helps that the screen is large, so the icons can be large as well.
The onboard speakers are fantastic. I had not been using them until Monday night at the party, when I had to set up a little behind the two Maui 5 speakers.
I decided to turn on the speakers and the sound was great. In fact too loud, so I turned the keyboard volume down. Then I realized I was not hearing the Maui 5s. I had to figure it out quickly and I wanted to make certain I wasn't missing something so I called AJ and asked him if turning the speakers on would affect the L&R outputs.
He said "no way". But he said they are really strong.
Then I realized that I had to turn the keyboard volume down, and the speaker/mixer volume UP to balance everything. A few minutes of experimenting and everything was fine! Those speakers are so powerful I could have done the job with just the keyboard.
Of course there are some things I don't like much. The power supply is external, adding another "wall wart" to the setup.
There is no indicator light to tell you if the vocal harmony is on or off; you have to remember it.
There is no phantom power for the mic.
It's a TAD heavier than I thought it would be, but I'm not moving it much and when I do I have lots of help. It is three pounds heavier than the Korg PA-4X61. Doesn't sound like much...
It's too long, just like all the other Ketrons. I had to change stands from my 61-note size to a 76-note size, even though the keyboard is a 61. Same thing for the carry bag.
However the wasted space on the right makes a great mouse pad! Or you could easily set a mini mixer or whatever there.
Just thought some would want to hear my first impressions.