What audio aspect are you knowledgeable in?

I don't know what I don't know

I know almost nothing....

But what i learned is very interesting and useful for me and i hope will be to others...

Any "embeddings controls" will exceed in transformation power most upgrade if implemented rightfully: vibrations/resonance controls, any way to decrease the electrical grid noise floor and the TWO complementary way to tune room acoustic:

The passive way with materials surface which are absorbing, reflecting and diffusive, looking for the right balance between these three is the BASIS...

BUT it is not enough,

Activation of the room by controls of the pressure zones and their modification by Helmholtz method using pipes and tubes finely tuned by ears like a piano tuning....Not only to transform the room but to help each ears to extract information from EACH speaker in controlling timing threshold and with the marking out of the direction of sound in the room differently for each ear....

I discovered that the most audiophile precious object is not any piece of gear at almost any price but a dedicated room....Contrary to almost all others opinions when they boast even rightfully about their favorite branded names....

This is all i know.....Give me any " relatively good system " even at low cost it will shine so much with my methods that upgrading urge will cease...

This was the basis for my audiophile experience with a low cost system under control which RATIO S.Q. /price exceed most system....Read carefully my system is NOT the best system here.... but it is one of the best under this RATIO....

Acoustic and psychoacoustic are so powerful that it is impossible to undestate them... You can improve a system by a more larger margin with acoustic than by buying most upgrading electronical design if what you already have is "relatively good" to begin with.... This truth could kill a big part of electronic market in audio .....
Then i know almost nothing, but what i have learned through my listening experiments give me the key to sonic bliss without needing to buy anything exceeding basic relatively good gear thats all....

i know that it is incredible ....

All people by the way after placing some bass traps and some absorbing surfaces think they have already a good room.... 😊😁😊 Alas! it is a bit more complicated than that, this is the bad news.... The good news is this is possible to create it at NO cost.... I did....But you must trust your ears and it takes time to fine tune it....

 The test at the end is simple: no headphone can compete with your room under control.... I know i trash in a drawer my 7 pairs....dynamic,magneplanar,hybrid and electro-static....

Nothing really, but I dabble broadly.

I became an expert at figuring out when an advice is not worth listening to.

I cannot make my own more often than not, but I can tell you when yours is worthless. I guess that is half point.

I'm in the category of unknown knowns.