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I believe the N series uses the modified action of a six footer ... or slightly smaller.

That would be the same action for the whole AG series (N1, N2, N3.)

I believe I heard the action is from a C3 (?)

It's from a C1.

If that's the case, it's 5'3".

I was told the AG action is from a C3 also. Told by the seller I admit - but an extremely reputable and, it seemed to me, knowledgable one.

Most seem to believe it's the action of a baby grand, but I'm not sure that anyone has actually compared these side by side to really know for sure. It certainly is not at concert-grand length, and now I'm starting to accept that an action at this level for a digital might never be feasible. The only two digitals that I know of, that seemed to use a concert-grand actions, were the Ceus Master (Bosendorfer), and the Alpha piano. I don't think any of these made it into production, perhaps because they're too expensive to build.

There was a recent Italian-made piano, now that I remember, that looked like a wooden-grill. This instrument supposedly used a concert-grand action. I have no idea what happened with that.

More sound demostration. Is the air system completely modelled?

Casio Celviano Grand Hybrid (NEW)

I believe he says "the noise" (referring to the dampers) is physically modeled. I'm curious as to whether the damper resonance -not just the noise- is also modeled.

It sounds VERY good

This is going to be an exciting September, for sure. I wonder how fast this will show up here in stores...

Weeelll, here is the thing about keyboard actions... I think whatever we get used to is what we tend to prefer. My V-Grand has some form of PHA-III action. Some like it, some don't as with any keyboard action - even an acoustic (read the "piano" forum to find that out pretty quickly). When I have played acoustic (upright, not grand) pianos or even other digital pianos, I like mine better. I suspect that if I had, say a Clavinova or a Kawai of similar quality, I would prefer that keyboard instead. I suspect that those who have indicated that we can get used to a variety of keybeds even across the digital/acoustic "line" within a short period of time, are probably correct. It would not be good for a person to buy a piano, whether digital or acoustic, and not like the action. That purchase would probably not get played much, which would be a sad thing. So I suppose the more choices there are in keyboard "feel", the better chance a person will find something s/he will like.

Tony

A GP-300 arrived today! We just finished assembling it, and I'm excited to share it. Anyone in the Atlanta area is welcome to come try ours and give their own review!

Please, do a high quality recording ASAP. And if you could play something more complex than few keays here and there it would be great! Something for wh at those pianos were made - a bit of classical.

Please Play Moonlight Sonata so we can compare it to David's video of the CA97. Let's hear how well the piano sustains.

Mike could you tell us a bit more about those features : "Open String Resonance" and "Aliquot Resonance" ?
It is the only real difference in sound between the 300 and the 500 (I think that pedal and key noise will not convince anyone about buying a more expensive piano), and it is not clear to me what they are. There is no modelled resonance of open strings at all on the 300 ? Or simply this parameter is not adjustable ?

I would like to know the difference between the String Resonance (a feature of both GP300 and GP500) and the Open String resonance (only the GP500).

According to the Casio specifications, the added features of the GP500 are :
Open String resonance
Aliquot resonance
Pedal action noise
Key on action noise
Key off action noise
And more sounds (35 instead of 26).

These specs are way down at the noise level ... as in not relevant.

Pedal noise, key-on noise, and key-off noise specs are just crap. The keys and pedals make noise even without these "features"!

The only spec listed above that might mean anything is the open-string resonance. And that can only be judged by trying the piano.

Summary: Quit looking at the specs. A piano means something when you play it and/or listen to it. Specs on paper mean nothing. Nothing at all.

What are they talking about with "open string resonance" anyway?

The usual terminology is:
Damper resonance: when all strings are subject to resonance because the dampers are up.
String resonance: only notes being held down are subject to resonance.

Now there's Open String Resonance - what does that mean?

Surely the GP300 has Damper and String resonance - even some of the Privias and normal Celvianos have that.

Maybe they mean "open lid string resonance"?

It seems to me that those features can be important if you're recording from a line out or directly to a USB fob. Some people feel that adding in those "imperfections" (like pedal noise) of an actual acoustic instrument makes the resulting digital recording sound more organic and realistic.