What's your budget for this mixer?
What do you want to do with this un-powered mixer? What key features do you require?
How many fingers am I holding up?
8-)

If you have L-R, mono, etc. outputs on the top (or rear) of the board you can bypass the amp. Then it just becomes a feature you can use if you ever need it.

Unless you _need_ a second mixer for some purpose.

Greener and Codemonkey,

Thanks for reply!!!why so much question there?why don't you guys just give me the right answ?

I wish to get another MIXER.The Mixer with Power-amp is too heavy!!!Now looking for a lighter mixer but with the spec that EMX5000 provided expecially Dual-Effects!!!

It sounds like Beringer had you in mind? Look into his mixers.

Getting rid of my Neve because it doesn't have built in the effects.
Ms. Remy Ann David

Well, why not tell us you wanted a lightweight mixer to begin with...

http://www.sweetwater.com/c264--Analog_Mixers
Have a look here, some may be powered, but probably not.

Also I don't know how much of a weight reduction you'd get by not having an amplifier in it. Is it even worth the, say, $1k you'd have to shell out?