Which is the most important part of a stereo system?


My system consists of a pair of B&W 630's, an old Denon 50 watt reciever (DRA-550) from the mid 80's, a Marantz CD5004 cd player, and now a Pro-ject Debut Carbon DC Turntable.  I'm pleased with the speakers and the cd player and while the Denon sounds good it has some issues and I want to upgrade.

I'm planning on returning the Pro-ject TT and getting a higher end TT.  I'm also looking into getting a new amp pre amp with a internal DAC.

Is the source the most important? The speakers? 

Please Help!
klimt
You’re close, mapman, very close. The real answer is the user’s experiments.
Removing geoff from the room is best for the SQ. cause' I imagine he just keep's talking ..... 🙉
Controls over the information-synesthetic embeddings field is perhaps a little bit too much to ask for when people dont even properly embed their audio system in the first three dimensions.... :)

You are from the future indeed.....