What have you been working on in 2020?

DIYing
Upgraded  the caps , recitiers , some resistors ,
speaker posts and RCA connectors on a McCormack DNA-250 amp .
Am now working on  Thiel CS2.7 speakers ,
experimenting with the wiring , then changing out the resistors 
and electrolytic caps .

Constrained Lagrange optimization software for quantum computers...

oh wait...

had my genius Roger Modjeski RM-9 rebuilt and an octet of Hyper precision matched EL-34 installed and broken in - Phat!

conducted extensive listening evaluations between AEA and Royer vocal ribbons for recording studio project. Finished results = released album :-) sponsor the arts!!!

wading thru Rettinger - Acoustic Design and Noise Control ( Vol. 1 ) trimmed .04 off the consequential RT-60 using “ stuff “

Working a nice walnut slab into an amp stand, down selecting to constrained layer and feet. HRS selected for stand to amp interface

Found that the 30+ year old half round vibrapods (about 2" diameter) work great as speaker cable lifters and stabilizing/anti-vibrational pucks.   
Hoping to replace my speakers with near SOTA speakers that my custom room and high end equipment/cabling deserves (that I deserve, heck I'm closer to 65 and have great hearing).  
A new cartridge is pending as mine is long in the tooth but not mistracking, just too many hours on it.  

Let’s see....

• No More USB cables - I2S connection instead
• Optical isolation of my Ethernet input cable
• New SMc Audio monoblocks
• Trying springs under the monoblocks
• Considering decoupling speakers from the concrete floor

Aurion(tm)