https://www.bcmj.org/worksafebc/hand-arm-vibration-syndrome-havs@Bill Bauer & @Digital Doc
It could be a vibration thing. My hands were a little numb after using the equipment but I thought it was because I was using a death grip. The vibration is a lot less than gas tools.
The first time I heard the machine through a tunnel noise was when I was splitting wood with an axe with plugs and muffs for about an hour. Another time I drove my diesel truck for about 5 minutes with no hearing protection.
I'll monitor if vibration is the determining factor. I'm also going to get some anti-vibration gloves.
Sounds like HAVS- hand arm vibration syndrome
Definitely wear thick gloves, and also try some additional foam padding on the handle of the power tool.