What audio aspect are you knowledgeable in?

In the last 48 years I've made my living doing everything from live sound, rock & roll roadying, acoustical consulting, professional systems design and installation, design, manufacturing of speakers, selling HiFi, owning a HiFi store, scrounging garage sales and reselling, and 20 years as an IT Architect for AT&T. So actually, I know quite a lot about quite a lot and know there's even more that I don't know. I will confess to loving vinyl and turntables, and continue to be amazed what different loudspeaker designs can do, (BBC nearfield, Magnepans, vintage Altec and JBLs). My next exploration will be an HE full range driver in a transmission line enclosure from my shop driven by (hopefully) a 300b tube amp. And I'll use my Sonos 1s for background music while building it.

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.