Yes, I vote for a second opinion for hubby and maybe even get the machine anyway to see if it will help.
Earplugs are great (even though I know you can't use them, vaknitter). Just don't do what one of my friends did: She dreamed she was eating taquitos one night, and woke up chewing on one of her earplugs!
EWWWW! But that story cracks me up every time I think about it!