Michael, you're again asking essentially the same question which resulted in the "debating" that you mention. There's no good reason to expect that the basic amplification of the 805 would be audibly better than your present unit, if it's still in good operating condition. On the other hand, the more up-to-date processing features on the 805 might well give you greater listening satisfaction when you choose to make use of them.

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Enjoy the music, not the equipment.