best of both worlds can u get a musical multi amp?

Just puzzlement. Some MCH amps have channels with independant power supplies so they only share the chassis and power cord.

Yes, I have listened to multichannel SACDs for a while.
try those new DSD recording (after 2002) on classical music SACDs, they are amazing:
http://store.acousticsounds.com/sacd.cfm?section=sacd&keywords=g_sacd&gclid=CJyTjLzktZQCFQJvswodtToHUg

You never know until you do A/B comparsion. You need to make sure:
1) setup all your spks are full range spks; 2) the center channel spk and amp are just as good as your mains; 3) use ITU guide for your spk positions, your rare spks shall place > 100 degree (as suggested by ITU 110 degree). 4) if you can, make sure the central channel get mod done too while geting your SACD player mods. I have all tube system setup in my listen room, really enjoy. Now I realized the 2-channel system will not reproduce "live music" -- as people claimed they have.

There is no reason it can't sound as good. This is just another "audio myth".

Sure a multichannel integrated with 5 channels that costs the same as a monoblock single channel power amp is quite unlikley to out perform the power amplification prowess of the monoblock on any one indvidual channel...but you would expect that.

If you want musical then "downgrade" to a used Dreadnaught I. Alternatively, try an Ayre V-6xe.