My system also is heavily tweaked, but almost all homemade, and with no negative, because the correction is made on the spot, and any successive tweaks that degrade the sound will be automatically modified... You cannot make that with costly out of the box ready audiophile products...The proof is in the pudding, in the last 2 years all my tweaks produce only an always positive cumulative effect...Why? Because it is my ears that has created these audible effects with my brain imaging the materials to produce or modify it to pleasure my ears, gradually, one weeks after the other, it was fun,... The total cost is less than the cost of a piece of gear ...One of my most extraordinary tweaks cost peanuts...
Lacking money and dreaming HI-FI, I takes that like a fun challenge, I read a lot, I was inspired, buying almost nothing except basic materials to makes my own creation...
Then having a lot of tweaks is not the problem at all "per se", if all is designed by the same ears on the same room, with the same system; otherwise antagonism between parts and industrial ready made products makes impossible an optimal synergy that is possible only with tweaks obeying the constraints of your unique et individual system, in a unique room, in an totally unique electrical grid and acoustical atmosphere... My best...
The good news is the cost is ridiculous, and the result astounding....The bad news for some is you must think and read and inform yourself....But it is more fun, a more lasting fun, than buying something...And I am proud not from exhibition of a luxury object but proud to have create luxury musical object with almost trash….Look at " my system section" photos, compare it to others systems, and laugh at me, but remember that I will laugh the last laughs...My best to all...