Well, I'm happy because the sound is even more pleasant now, it will have been useful to replace all these components. I saw a video on Youtube of "trungdtmc" and therefore changed like him: nichicon FW 10uf 50v x9 --- wima mks4 1uf 100v x4 --- coilcraft OEM inductor 10uH x4 --- I still have the two capacitors of 50V 1200uF to be replaced with nichicon 1000UF 63V FW series but I haven't received them yet. By the way, the power supply used is a MEAN WELL LRS-350-36 Switching Power Supply Module SMPS 36V 9.7A, no background noise, no hiss, and the whole thing does not heat up at all. Long hours of listening to music are coming..... I also have a very good Dual AK4499 DAC with SparkosLabs SS2590 PRO AOP, so a very clean audio signal to enter the Aiyima A07. Goodbye. Next step: put the whole thing in a nice diy box (wood / metal).
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No thanks ... , for maybe no differences at all ... it more look like what people do to their car to get 1 more horsepower and destroy the whole equilibrium of the system.
If it suit you it's perfect, but i know it would not suit me and since all this is very subjective ... till you got the proper tools to get real scientific number out of the changes, it looks like a no go.