On 18 Feb 2007 06:07:41 -0800, wrote:

Hi peter, thanks for the reply.

I have ruled out scenario 2 - connecting two amps to the same speaker
terminal - recipe for disaster!

Scenario three could sound odd, you're right.

The first scenario would work as I can bypass the pre-amp on the
stereo amp and just use it as a power amp. I just run the receiver pre-
out's to it and have the speakers connected to this.

I see what you mean, but still think that you'll have trouble
balancing them. You're assuming that:
(a) the output of the Denon and NAD power amps will be *exactly* the
same; and
(b) the sound quality of the two power amps will be identical (ie,
that any colourations introduced in the power stages will be the
same).
Frankly, I think that neither is likely to be the case. I still think
that balancing will be a lot of hassle. Even if the amps are of the
same nominal power (I haven't checked), the reality is that you'll
still have to adjust the balance via the Denon's setup process
(assuming that yours has a similar system to my 3805), and that
getting this right won't be easy.

Peter.