John, welcome. If you like the features on the 2807, wait for it(a week or a month). You won't hear the fidelity difference between it and the 4306 because there's no good reason to expect that there'll be one. DACs should be a non-issue these days since the technology is mature and manufacturers get the chips in quantity for about $1 each. The C-Net 2807 link is wrong; the 2807(and even the least expensive Denons for that matter)have 24/192 DACs.

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Enjoy the music, not the equipment.