The problem with all this is that the MPS is supposed to be stable down to 2 ohms. Obviously 4 ohm speakers pull more current than 8 ohm, which will stress the amp. You're saying it's fine with 8, fine with 6, but not fine with 4. What would 2ohm speakers be like? That worries me a bit regarding the specs of the amp, and this is supposed to be their flagship product.

It's pretty clear to me that you probably ought to just send the MPS back and call it a learning experience. If your Denon works, why not just enjoy it? I like to tinker as much as the next guy, but it seems that this situation is causing quite a bit more grief than it should. This hobby is supposed to be fun!

But I'm still curious if bi-amping your M80's would help the situation....

Quote:

Another thing I have not mentioned. The mps-1 does not shutdown using my Qs8 6ohm speakers, or another guy at work's m60's 8ohm. He brought them over this last weekend since I don't own my m60's anymore. Just driving the m80's is the issue. oh well



M80v2 | VP150v2 | QS8v2
SVS Pci+ 20-39
Emotiva UMC-1 & LPA-1
M22ti + T-Amp, in the Office