I fixed my S9 by buying a sound box on ebay and some ear plugs..lol. Right now I have one rig going but soon as we get the garage cleared out, my son and I have 3 each to set up. My one is in my bedroom.

I would recommend using a hardware wallet. My son and I are mining bitcoin and we use Keep Key wallets. Hardware wallets are safe and secure. I would stay away from online wallets completely as they can be hacked. Don't let people tell you they are hack proof because they are not. Anything can be hacked at any time, just takes someone with the time and skill.