I hope to be understood right...
When we change an electronic component, amp,dac or speakers, we hear a difference in many aspect of S.Q.
Having said that i can say what i want to say and being understood...
In my actual audio system i dont have the impression that nothing is lacking much and more than that the music sound natural and my impression is that my speakers, dac, and amp. has NO sound of their own, no color, no emphasis on certain range of frequencies, and more important the instrument timbre sound right....
For sure my audio system has his personality so to speak, but when his personnality disapear for me and only the music is there the goal is reached....
The reason for that miracles is not coming from my choice of dac only, or amplifier, or speakers, however good they are; the reason is a rightful mechanical,electrical and acoustical embedding....
Then before throwing too much money in upgrade think about vibration control, decreasing the house noise floor, and controlling the acoustical dimension of your room.... If not, like said an acoustical engineer, no speakers can beat the room anyway; i will add no amplifier and no dac can defeat bad embeddings of the audio system either..
If you want to upgrade it must be for the good reason...
Myself i dont want, it is no more necessary...... :)