Can anyone please advise me if iam missing out a great deal by using an old av amp. My system comprises harman kardon av8500, sky hd ,sony bdps760, pioneer pdp507xd, proac hexa centre and rears, proac studio 150 fronts and rel stadium sub. I hope eventually to install a projector into my system but my room is very light but i hope to address this issue at a later date. I have tried using odd matching phono leads i had lying around from sony bluray to av amp but sound was rubbish. My next step was to purchase 3 pair of Chord crimson interconnects but was not sure if this would only benefit bluray and not sky hd. Would i be better off putting this money towards Hdmi av amp, and what advantages are there. My system is in a large room ,seats 3m from fronts and 3m from rears but is very hollow sounding due to lack of soft furnishing and tiled floors and vaulted ceiling above rear speakers also lounge and kitchen T off this room through open arches,we sometimes wish for more volume from rears. Any advise on these issues would be greatly appreciated and if advised to go for new amp any suggestions to greatly improve on current amp. Many thanks.