Their seems to have been issues with hd-sound over hdmi (bass boosting) but may have been sorted now by sending units to an authorised service engineer for a firware upgrade.
There is a huge thread on this if you do a search. Other than this issue Pioneer produce great amps.
Hi,
I cancelled my order in the end.
They weren't likely to have any stock in for a good month so cancelled.
Will just wait for the new ones coming out in August, Got my eye on the LX70 now !