Focusrite Scarlett Solo 4th Gen

Very good finishes: the item is solid, resistant, without scratches right out of the box, with a pretty good audio thanks to the new preamp come out with the 4th generation products. Update: unfortunately, my 2012 macbook seems too old to be compatible.

I initially had a Yamaha mixer, but too many butones for what I needed (home office for music and Teams conversations).
Focusrite is much more compact, simple to use and sound is clear.
The only problem is a rustling sound at the volume knob (including for the headphone volume knob)

I understood that the contacts should be cleaned with a spray, but still, it's a year since the purchase, I didn't expect this problem.