I previously got a Howard Leight earmuff but my girl still say she can hear her autist brother
shouting/wailing. She listens a lot on her iPhone for music & often has to take out the HLeight's
earmuff before inserting her Apple earphone in.
Was looking at above eBay links: is 37 NRR truly the best in blocking noise?
Or is there one that give noise blocking with an added music input wirelessly to cancel off the brother's shoutings?