I have the Emotiva with a Mac amp. Amazing sound and video. The remote on the Emotiva is one of the worst ever. I bought a harmony within 2 days.
As far as speakers are concerned: Buy the amp/pre first or a receiver if you like. Even a $500 Denon should be quite an improvement. Almost any one will let you select how many speakers. DO NOT BUY THE CENTER YET. You may be amazed at how good things sound with a newer amp.
Now, when you decide on a center speaker, which will make a world of difference, do yourself a favor first and try to compare some newer speakers to your Infinities. Things have changed a little in 15 years. More importantly though is getting an exact match for the front 3 speakers. The sound should be seamless across the front channels and you won't get this unless you have speakers designed to match soncially.
As far as speakers are concerned: Buy the amp/pre first or a receiver if you like. Even a $500 Denon should be quite an improvement. Almost any one will let you select how many speakers. DO NOT BUY THE CENTER YET. You may be amazed at how good things sound with a newer amp.
Now, when you decide on a center speaker, which will make a world of difference, do yourself a favor first and try to compare some newer speakers to your Infinities. Things have changed a little in 15 years. More importantly though is getting an exact match for the front 3 speakers. The sound should be seamless across the front channels and you won't get this unless you have speakers designed to match soncially.