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
My 2-channel HT is starting to sound *really* good. The Swans have finally broken in and dynamics have increased tremendously...

I've had a couple people listen to movies on my JVC XV-45 DVD player and they don't feel any need for surround speakers. The DVD is sitting on four Vibrapods which in turn rest on an MDF board coupled to the TV table with Blue Tack. The digital signal is sent via a 50' coaxial run to my Soundstream/Krell DAC-1 and the sound is really something! Pretty amazing for so little money...
There are some very valid points made in this thread both
pro and con for multi channel HT sound. As someone who has
owned a video editing and media duplication firm for the past 12+ years - I'm frankly amazed at the constantly
shifting standards for HT. Dolby Pro Logic, Dolby Digital,
DTS, THX, and on and on. Try and find a decent supply of
software in any of these "formats" that can be played back
with any sort of decent fidelity.
Quite frankly, I regard most of the lower cost HT hard-
ware as a way for the Sonys, Panasonics, and Kenwoods of
the world to separate the gullible from their money. Anybody
want to buy a Dolby Pro Logic Pre-Amp?
Just giving my two cents worth..... it's hard to enjoy your music when a big tv is in front of you even if it's not turned on. Not only is the tv an eye sore, but it takes up the space that the speaker needs to "work" in.
My current 2 channel set up does not compromise stereo imaging. I have a near field rig with a 27" Sony WEGA on which I attach a RPG Pro Foam panel when listening to music. It really works.

Avideo's got a point regarding all those formats...crazy, to say the least. Did someone mention 10.2?
I didn't read all the replys, so I'm not sure if anyone answered the original question...In my research I have found the new Anthem AVM20, Tag McLaren AVR32 or the Proceed Pre/Pro would merge the best of both worlds.

Good Luck.

m-