Why is 2 Channel better than multi-channel?


I hear that the music fidelity of a multi-channel AV Receiver/Integrated amp can never match the sounds produced by a 2 channel system. Can someone clearly explain why this is so?

I'm planning to upgrade my HT system to try and achieve the best of both worlds, I currently have a 3 channel amp driving my SL, SR, C and a 2 channel amp driving my L and R.
I have a Denon 3801 acting as my pre. Is there any Pre/Proc out there that can merge both worlds with out breaking my bank? Looking for recommendations on what my next logical steps should be? Thanks in advance.
springowl
Surely, Macrojack, none of those people are among us!! Indifference is rarely apparent here. That leaves the other possibilities. ;-)

Kal
"08-10-10: Kr4
No. I am acknowledging that decent MCH will take up more space and cost more than decent stereo. I was also saying that prejudice was the only other reason I can see. ;-)
Kal"

I guess I don't follow how MCH is better. If you compare 2 similarly priced systems and the 2CH sounds better...

So I guess my answer to the OP would be that 2CH is better because it sounds better. "At a given pricepoint" is always understood.
"At a pricepoint" is not universally understood. If you want (it) to be understood, you must say so.

In addition, even at a pricepoint, the choice might be influenced by the particular pricepoint. For a $2K system, I would certainly agree that a 2CH system would sound and, therefore, be better. For a $200K system, the situation is debatable. The advantages of MCH will, imho, will be more enjoyable compared to a $100K 2CH system and, also, more enjoyable than any incremental improvements you might make to the 2CH system for an additional $100K.

Is that a real-world analogy? For some, it is. OTOH, we are speaking of generalities here.

Kal
There is no reason why you can't enjoy both. It does take a substantial investment into multichannel to have a system that does both very well.
I have been struggling with this myself and have decided after listening to a limited number of SACD recordings that I am going to convert back to 2 channel and utilize my 5 channel amp to bi-amp my Linn Ninka's and call it a day. Most films I watch are just fine in 2 channel anyway