My opinion is that the Center channel must match your right and left channels to sound "seamless". Rears don't matter as much and can be added in the future. A subwoofer helps more than you know. Not only does it have a dedicated track on almost any movie, when you don't use a sub your main speakers have to handle this load. Movies have a ton of wattage draining bass. Your overall sound will improve by adding a sub.
You will need a preamp/processor. These can be configured for anything from 2 speakers up to full surround. Most will allow you to start with 2.0, 2.1, 3.1 or more (.1 is the sub).
Your computer and DAC can continue to be used as a source, ie CD Player. Blueray players vary greatly. One with streaming is great if you like to rent movies on-line. The only other issue is HDMI. Older pre/pro's don't have it. If you are going with a new tv, new dvd/blueray, this should be a must.
Lastly, add a pair of rear speakers when you like. They can be powered to match your fronts or just run from a little power amp.
You will need a preamp/processor. These can be configured for anything from 2 speakers up to full surround. Most will allow you to start with 2.0, 2.1, 3.1 or more (.1 is the sub).
Your computer and DAC can continue to be used as a source, ie CD Player. Blueray players vary greatly. One with streaming is great if you like to rent movies on-line. The only other issue is HDMI. Older pre/pro's don't have it. If you are going with a new tv, new dvd/blueray, this should be a must.
Lastly, add a pair of rear speakers when you like. They can be powered to match your fronts or just run from a little power amp.