Is it best to use a 5-channel amp for biamping??

Go the the MartinLogan Owners forum and ask for feedback about Sunfire amps. Some are happy; others have issues.
(www.martinloganowners.com)

Sean, that was very informative. Do you think the difference between the signature and the standard model is compelling enough to justify spending the extra money? My last amp was an Onkyo Intergra 504, therefore I would think the standard model will be a big upgrade for me.

Jetmph, Interesting site! Thanks.

Planckscale: It is typically cheaper in the long run to plan ahead / think about future moves than to just buy what you can get by with now. If you take that approach, i can pretty much guarantee that you'll end up upgrading later and spending more money doing so. Then again, many of the folks selling the "standard" Sunfire's and Cinema Grand's at reasonable prices are moving up to the Signature versions. Following that path isn't a bad thing ( i did it myself ), but if you've got the money now or can swing the difference in a short period of time, i would hold off and just make one big jump rather than two more costly jumps. Other than that, you can't have "too much" power. That is, unless you're "wreckless" with the volume control : ) Sean
>

Sean:

That's what I call "boiling it down" advice!!!!!!
I've been sticking to a lesser amp tweaking the whole system while building the "critical mass" and take the leap!

Thanks!!