nope... no strings
Yamaha CP33 is a brilliant stage piano. it has 3 layered stereo sample
(that means that unlike the other samples it has sampled resonance and key off strokes).
What you get is this: When you press a key you hear the tone that key
produces + the resonance of other "strings" like on a real piano... so that kinda simulates the physics
that happen inside the piano. It's not like a classic static piano sample.
It doesn't have speakers, like P140 has (almost the same keyboard. P140 doesn't have a 1/4" jack output but has speakers).
So if you need a great piano sound, and even better key feel you might consider these keyboards. It only depends what will you use it for.
Live gigs, and stage performance - CP33 (pictured above)
Home playing and practicing - P140 (below), that comes in black and silver
P.S. "Yamaha CP33 manual" in google turns out this:
http://www2.yamaha.co.jp/manual/pdf/emi/english/synth/CP33_en_om.pdf
P.P.S. If all goes well, i'm getting one of those myself in a couple of months