Bleah!! NOISE!! Please Help.

[Xippy]

Just trying to setup for the first time but having a strange problem.
I have a Zoom MRS-1608 Multitrack recorder and a Roland Fantom XA
keyboard.

When I feed the keyboard into the desk, get a decent level and press
a key, the note (especially on sounds like piano or bells etc) is not clean.
It's not distorted as such but sounds like a really bad sample with a lot of
noise as the note fades. It doesn't fade cleanly but with this hiss and then cuts off.

However, when I listen through headphones just from the keyboard itself
it's a clean sound with no after noise.

Please, someone tell me what I'm doing wrong or what's going on because
I can't lay anything down that's soft and ambient and it's driving me nuts.

Thanks.

[blazingstrings]

COuld you be running through a insert effect on the Zoom?
Like say a compressor or other effect?

-Blaze