Russell Sellers – (Trenton, NJ) Reviewed on: April 2013 In the Seniors Home I work in, a lot of our residents use an MSA 30X Discreet Sound Amplifier. Most of them, while not technically deaf yet, have some difficulty hearing. With MSA 30X Discreet Sound Amplifier, it’s not that difficult to talk to them. They can hear each other clearly, raising of voices is minimized and they are generally of better disposition because they can converse better. Another good thing about MSA 30X Discreet Sound Amplifier is it doesn’t require batteries. It’s rechargeable so there’s no battery expense. It fits either ear and it’s so discrete, it’s barely noticeable.