It is so easy to just swap components. But room treatment is a totally different animal. You need to know what to strive for and which/where the issues are in your environment.
I believe you need measurements so you don't wasting your time.
Some even goes so far and say:
"If you don't have listed on YOUR system in a treated and well controlled room. Then you haven't heard the capability of your system."
I have measured dedicated 2ch rooms there bas frequencys have still being in the room after 1000ms. That shows clearly that we have difficult to hear other sound details that your speakers and system is playing during the time when a prior sound is still bouncing around in the room. And hide/smear over it.
So with that reasoning above your system consists of: "TT, amp, speakers AND the room"
If you fix that your room then you will be able to hear how good the rest of your system for the first time. And if you just keeping and swapping out components less than optimal room conditions than that is also a waste of time.
I believe you need measurements so you don't wasting your time.
Some even goes so far and say:
"If you don't have listed on YOUR system in a treated and well controlled room. Then you haven't heard the capability of your system."
I have measured dedicated 2ch rooms there bas frequencys have still being in the room after 1000ms. That shows clearly that we have difficult to hear other sound details that your speakers and system is playing during the time when a prior sound is still bouncing around in the room. And hide/smear over it.
So with that reasoning above your system consists of: "TT, amp, speakers AND the room"
If you fix that your room then you will be able to hear how good the rest of your system for the first time. And if you just keeping and swapping out components less than optimal room conditions than that is also a waste of time.