Hearing experts Asius have claimed that their latest technology could aid the frontman's hearing problems
<br /> Sharks don't have ears but they're drawn to the low frequency pulsing sounds prevalent in heavy metal
Sadie Elledge was invited by the touring AC/DC vocalist to their Washington D.C. show after the incident went viral
Band also debut 'Problem Child' for the first time on their current tour
"I'm ready to get off the road," the bassist said in a video message
Former member was convicted of drug possession and threats to kill last year
This is the first time AC/DC have played the track live since 1982
Band play spectacular hit packed set filled with flames and fireworks
Johnson has met with an ear specialist
The singer thinks that the device could be a lifeline for his AC/DC future