2 channel system?


in a 2 channel system (cd player or integrated amps) which component affects the sound the more? im looking to upgrade gradually and im wondering which component will have a more direct impact on the sound? i understand that matching of components is very important and all parts play an important role in the overall sound? but in your opinion which one affects it more? thanks in advance.
inspiral
You should go with the best source (cd or turntable) your budget can afford. No matter how good is your preamp or integrated, they only will amplify what you feed them. In all of my years in this hobby, over 25, an upgrade in the source always have gave me a noticeable improvement in sound quality. Upgrades in the preamp and the amps will give you improvements, but more subtle ones. Go to www.linn.co.uk there is a good explanation on how even the best preamps and amp can't improve a low quality signal.
Hepl offers a good rule of thumb. However, it depends on what components and speakers we're talking about. If your source is pretty good, but your amp is very weak, you could realize a more noticeable improvement by upgrading the amp. Every system is different.
rule of thumb is you can't hear what doesn't exist... buy the best source you are able to afford so that if the software has the info the hardware can read it and send on down the line.