What audio aspect are you knowledgeable in?


Over the years I really appreciated the advice given me by people on this forum who are quite knowledgeable in tubes, digital, turntables, amps, speakers, and the rest. I also believe and appreciating what I'm good at and what I can advise people in. So, what do you knowledgeable in? What do you feel expert enough to confidently advise people in? For example, I feel confident enough to advise people and cartridge set up and tube selection. But I don't really feel confident enough in speaker selection, or DAC selection, or room treatment.
128x128simao
I know what sounds good to my ears. After that, I don’t don’t know $h/t from the proverbial shinola. 
@rocray 

I know what sounds good to my ears. After that, I don’t don’t know $h/t from the proverbial shinola.


that is THE most important thing, and to be accepting and honest about it - key key step in musical happiness in system building -- too many people who come here looking for advice fail to know this, or cannot express this properly
I am what I am.  Here is how I approach this hobby.  We can ALL agree,we can recognize the sound of a train. However,can we all agree on the same exact sound? Of course not.  Our brains don’t process everything the same.  I’m not going to try to tell another person how they should hear something. Yet,we see this everyday.  While a great majority on this site forgot more than I know technically, I don’t understand how someone can tell me the best sound to my ears. I’ll leave that to MY internal processor.