The only way the electronics business can stay in business is by introducing new formats to obsolete existing equipment.
My advice to you is to try to sell the 9000 for at least as much to purchase a new NAD Masters, Parasound Halo or similiar quality amp in your area. That way you will only be changing out prepros in the future and you will be able to enjoy your amp for decades.
Resale prices always continue to drop for used high end AVRs over time.
Yes you can do this. just leave the volume alone after calibration of the main receiver. I use to have a set-up like that and the wife and kids would use the volume control of the wrong receiver or not turn on one of the receivers and then wonder why it sounded terrible.
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