What's the difference between a disklavier and a disklavier pro?

Hi jpgordon,

Without knowing which style disklavier you're interested in (Upright,
Grand, GranTouch) it's difficult to be specific as there are well over
30 Disklavier models available.  I'll try to elaborate on some of the
major differences, and if you have a particular model in mind for
comparison, just post a request for clarification and I'll go further.

There are a number of differences between models in the Yamaha
Disklavier line of products.  The specifications for each of the
models are available on Yamaha's website.

Yamaha seems to divide their Disklavier line into 3 parts:
1) Disklavier Grand Pianos
2) Disklavier Upright Pianos
3) Disklavier GranTouch Pianos

Each product line has a catalog page on Yamaha's website, with links
to separate web pages for each model:

Disklavier Grand Pianos
http://www.yamaha.com/cgi-win/webcgi.exe/gDKG00002

Disklavier Upright Pianos
http://www.yamaha.com/cgi-win/webcgi.exe/gDKU00002

Disklavier GranTouch Pianos
http://www.yamaha.com/cgi-win/webcgi.exe/gDGP00002

------

The Disklavier grand pianos range in size from 4'11" to 9' length.  As
you might expect, there's less variation in size for the Uprights,
ranging from 44" to 48" width.

When comparing models, you'll probably find differences in the sensor
system (how the piano tracks key presses and pedal motion), the media
it uses (does it use Floppy disks?  CDs?), how much memory is in the
piano internally, and the control unit interface presented to the user
(LCD display).  The high-end Yamaha Disklavier Pro 2000 even comes
with a touch screen Windows computer attached to it!  See the photo
and product specifications for the Pro 2000 here:
http://www.yamaha.com/cgi-win/webcgi.exe/Specs/?gDKG00002PRO2000

Some of the differences listed specifically for Pro series are  
"a host of new additional features, including Silent functions, XG
instrumental tone generation, and MIDI and PC connections, extend
their range to take advantage of a new era of musical opportunities."

and

"Sensors on the DC6PRO register not only the downstroke but the
release speed of the keys, a major advance in Disklavier technology"
http://www.yamaha.com/cgi-win/webcgi.exe/DsplyModel/?gDKG00002DC6PRO

Interestingly these same "new" features seem to appear in some of the
Mark III line of Disklavier Grand pianos, so the distinction between
Pro and non-Pro Disklavier may not be as sharply defined as one might
wish.

For additional information, you might want to contact Yamaha for a
copy of their free Disklavier promotional CD, "The Piano of Unlimited
Potential".  According to several of Yamaha's web pages, you can get a
copy of this CD simply by emailing Yamaha at
disklaviercdrom@yamaha.com and providing your NAME and MAILING
ADDRESS.  (This offer is for US residents only.)
http://www.yamaha.com/cgi-win/webcgi.exe/DsplyModel/?gDKG00002DC1A 

Search Strategy
In Google, I searched for "disklavier yamaha" and found links to the
yamaha product catalog.  Then I explored those pages.

I hope this answers your question and gives you some resources to work
with.  Again, should you have questions about a specific Disklavier
model, please don't hesitate to request a clarification prior to
rating.

Thanks,
duncan2-ga

Not very useful. This is nothing but verbatim extract from the Yamaha
web site, and uninformed speculation. I was hoping to receive an
answer from someone with at least a bit of experience in the field; I
can look up things on Google as well as (if not better than) anyone
else.

That was a rude rating.  I thought this was a helpful answer for $2.00.