Where to spend to get maximum audio quality on a system at a given price

[Purite Audio]

A good pair of active monitors, some like Genelec have A/D and D/A built in, and active room correction, they have their own attenuation, just add laptop, cables you will need something fit for purpose I use Mogami, but any pro audio cable will be fine.

That's it, spend some time setting them up in your room ,if you can measure your room, that would be interesting and then you can tackle specific problems.

Keith.