See the manufacturer's site.

USE

The keyboard is a good old-school one and the quality of the keys is impressive.
It's very easy and intuitive to use.
I'm a pianist with 20+ years of experience and you can trust me when I say you can easily go from an RD to a piano and vice versa.

SOUND

I bought it in 2002, it was very good back then, I compared it with the Yamaha s90 (which was more expensive) and I thought it was pretty good.
I have now moved on to vst instruments (Steinberg grand, B4ll, elektrik piano) and I only use it as a master keyboard.
The piano sound is OK, but the decay is very fast. Notes disappear very fast
Rhodes- Excellent
Hammond (OK) lacks amp simulation and other hammond effects

It's OK to play a small gig without wrecking your head with a PC and connections. I bought a SRX11 card to improve the piano sounds.
It's quite heavy, but well-made.