Any suggestions?...Just connected a Sony 7700 DVD player to my new 568 using the thin blue digital lead provided. When I came to level calibration using the sound tests, there was the usual noise with lots of extra crackling over the top. Swapping this lead for a Monster digital cable seems to have got rid of this crackling.

I wondered whether this was coming from the power cables which were fairly near the digital cable... maybe the Monster cable simply has better screening?

The only other potential problem is that when the 568 unit arrived via courier, it had fallen out of its foam protectors onto the bottom of the cardboard box, so maybe it has some temperamental damage to the DACs?
Maybe I should return the unit for a replacement? I'd appreciate any advice. Thanks.

568, 558, Sony 7700 DVD, M&K - S125 L&R, S125C, S85s, SS150THX surrounds, MX350THX subwoofer.