I personally would use either the Adcom by itself or 4 of the 5 channels of the Marantz for bi-amping your speakers. I would not mix the two amps on the same pair of speakers for several reasons.
1) Each amplifier has a sonic signature. Chances are that if you mix these components, it may not sound proper.
2) Depending on the speaker, I have seen the grounds tied together on the crossover. This has the potential to create a ground loop in your system (making a higher noise floor).
3) If this is a HT setup, the 5th channel will be the same sonic signature you may use for the center. The Adcom could be used for the rears.
I would experiment and see what works for you...
Best of Luck!!
1) Each amplifier has a sonic signature. Chances are that if you mix these components, it may not sound proper.
2) Depending on the speaker, I have seen the grounds tied together on the crossover. This has the potential to create a ground loop in your system (making a higher noise floor).
3) If this is a HT setup, the 5th channel will be the same sonic signature you may use for the center. The Adcom could be used for the rears.
I would experiment and see what works for you...
Best of Luck!!