emusonacid!

Here's what I did:

1) Load any Preset
2-1) Goto RSETUP, Define BUS1 and set the first FX to RFX Hall with
WET/DRY=50%
2-2) set BUS-OUTPUT MAIN to 100%
3) set BUS1 to MAIN OUT (RFX OUTPUT MAP)
4) Assign Preset to CHANNEL 1 (Multimode 1-Page)
5) Set SUBMIX to MIXER (Multimode 1-Page)
6) For Channel 1, set the second column=BUS1 and SEND0=100%
(Multimode 2-Page)

The amp is connected using the MAIN OUTS

Playing the keyboard, the sound is NOT effected

Any idea what I've been missing?

Can't help you with your problem, but have you looked at this page - lots of tutorials and resources that might shed some light on it for you: http://www.emu.com/support/files/downlo ... Platform=1

RFX now works nice.

I missed to select the correct RFX-SETUP in the MSETUP-Page.

RFX now really sounds good and so far, I don't have any issues with those noise bursts, which were reported by many others.