I bought it In July 2020.
Used it for about 2 months.
Since the problems started to surface I dove deeper in forums about Adam Audios subs (their monitors is still my favorite, it's only their subs that have low Quality Control)
A lot of people are having issues with Adams subs from Sub 7, Sub 8 and Sub 10. (the newer models)
I use it with a pair of Adam A5X
And here are the issues -
My Sub just shorted out or something, crackling and popping after being quiet for 20min. The LED on the volume knob started to flash orange/red kinda like it starting it up, every time it started it's glitch this happened.
I turned the LowPass-Filter knob and the volume back and forth. It stopped the glitches. Now it only makes 40-50hz "thumps" every couple of minutes. (reminds you of car doors shutting outside of your house)
The knobs has a PCB board inside of them for the LEDs, that is very loose fitting and can rattle.
The auto-standby never worked.
(could also be a fault from factory, but others have described the same problem)
It goes into standby if you are playing music lower than 65-70dB. (not ideal, because it will go into standby when you are working on a quiet part of your song)
The 85hz cutoff for satilites on the sub has the wrong crossover. I have to keep it raised to about 95hz for it to fill the frequency gap. Or raise the volume of the sub (too loud) to make it match better at 85hz crossover.