Hi, I am looking for an AMP and was considering the Denon 1803 and the Yamaha 630. However I have a connection issue with both these amplifiers. I have been reliably informed by both Denon and Yamaha that their respective amps will not switch RGB + Sync. See attached pic. Denons suggestion was to buy the AVC-A1SR !! I realise I could buy a JS box to upconvert the RGB + Sync signal to Component but can't really justify spending £150 on a box to convert the signal from a £100 Digital Terrestrial TV box! Does anybody know of a sub £500 amp which can switch RGB + Sync?