I'm considering getting the H/K AVR520 next month to replace my H/K AVRMK80II THX receiver. But there's one thing I'm unsure of. I have a couple dvd's that have Digital Surround(not 5.1) and Digital Stereo only audio. If I'm playing either of these audio options through the digital audio jacks can DPL2 or Logic 7 be applied to them? I ask because from what I understand from reading the PDF manual, DPL2 or Logic 7 can NOT be applied to DD5.1 or DTS and it appears this includes any digital audio signal received through the digital inputs. Obviously in a 5 speaker setup theres no need to apply DPL2 or Logic 7 to DD5.1 or DTS. Any clarifacation is appreciated. Here are a few quotes from the 520 pdf users manual. You can see from the quotes how the answer to this question can be confusing.