Back in the day when I was using an external DD decoder (Onkyo ED-901) with a "5.1 Ready" receiver (Onkyo 919 - fantastic piece!) I got an Adcom DD decoder attempting to "upgrade" my DD audio quality. The difference between Adcom decoder and my Onkyo was negligible and I ended up selling the Adcom away. It sure looked cool though!

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Philip Hamm