Plus, we were going to replace ALL the parts anyway because the stock inductors are even worse than the stock caps, and the stock resistors are the worst of all the parts!
The issue of
core inductors is well known and the explanation too, so no surprise.
As for the
capacitors, it is understandable that the use of electrolytics is avoided, especially at high frequencies
(tweeter). Now, it is assumed that others should not cause so many differences, and more one bypass
(Miflex KPCU-01) with the other stock cap!!!
The
resistors, it is assumed that the ceramics are of low inductance, however their change by
Mills MRA also generates a very appreciable difference. Either they are very bad, the usual ones are very bad or ... I can hardly believe that the lowest thermal noise and inductance are the cause of the big difference. Maybe it changes the harmonic profile too.
When you put the bypass caps tell us what differences you appreciate.
And the binding pots too. Do you keep the originals and thus be able to compare quickly?