I am stunned by the general ignorance....
Acoustic is key NOT the price of the gear...And i dont speak here about buying costly materials passive treatment...A dedicated room is the ONLY luxury in audio....NOTHING ELSE IS....But why any gear manucturing company could not spell the beans about that ? Guess why....
My system is under 500 bucks and even better system at any price are UNABLE to give me any upgrade fever ever... they are better yes but think about the ratio S.Q. / price ...my system price made it with a ratio S.Q. /price over the roof....
Ok am i deaf?
No, i fine tuned myself my room by hearing experiments daily on almost one year period with fun and junk materials from my basement... I used not only passive materials treatment but more importantly psycho-acoustic methods and Helmoltz acoustic resonators grid and diffusers...
Cost = zero bucks...
Acoustic is the sleeping princess and any piece of gear is only one of the 7 working dwarves...