Hello Rob, welcome to the forum.
It is very helpful that you participate is this forum
Thank you. I try to help where I can.
I am a beginner and was leaning toward the KDP110. The clicky key thing is a little concerning. Is this a known issue and has it been resolved.
I think I've only seen one or two actual reports about KDP110 clicking keys on this forum, so I honestly don't believe there should be too much to worry about.
In the US there is a big difference in price between KDP110 ($1199) and the CA48 ($2099).
Yes, these two models are quite different in terms of keyboard action and sound engine. The KDP110 is Kawai's entry-level specification DP, while the CA48 is more of a mid-high range model.
The CN27 ($1899) seems like a strange option since you only save $200 over the CA48.
I do not have a great deal of involvement in how the instruments are priced in the US, however I expect one reason for this could be the different distribution channels between the two models. The CN27 is sold by Kawai piano dealers, while the CA48 is sold by the larger chain stores and online retailers (although Kawai dealers can of course still sell this model).
And the CN37 ($2599), CA58 ($2999).
Yes, the situation is the same for the CN37 and CA58 in the US also.
It actually gets quite confusing.
For a side-by-side comparison of the CN27/CN37 and CA48/CA58 specifications, please try this link
. The comparison table gets a little squashed when four models are being shown together, so this expanded image
The follow graphic (extracted from the CA48/CA58 product overview, intended for dealers) should also help in summarising the relationship between the CN27 and CA48, and the CN37 and CA58.
How would you compare the action between the CN27\37 to the CA48\58?
The CN27/CN37 action is very good, the CA48/CA58 action is even better.
Would it may a big difference for the beginner?
It's impossible to say, I'm afraid. However, if I was a beginner seeking a digital piano, I would be sure to buy an instrument with the most realistic keyboard action I could afford.
I am also curious why nobody mentions the Kawai ‘Sound Museum’ App for IOS. It is not in the YouTube reviews or other reviews.
That's a good point, however I noticed that the CA48 product overview video by Kawai America does briefly mention the Sound Museum app here
I hope this helps.