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 can advise people on speakers, amplifiers, cables, digital to analog converters, preamplifiers, and tuners as well as room setup and placement options but you have to leep an open mind around me because the stuff i suggest may surprise you for sure.
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