Loss of left hand channel Djay 2 on iPad and iDJ Pro

During a wedding gig on Saturday I experianced the loss of music from the left hand channel. The iDJ pro and Djay 2 has been playing for about 4 hours at this point with no issues.
At first I thought it was the MP3 file but when playing the next track the right hand channel went off, the left hand channel came on and then off and the right hand channel came back on.
I switched the music source to CD, shut down the ipad, shut down the iDJ pro and restarted both. This cured the problem.
Any ideas if this was a software or hardware issue? This was the first time using the iDJ pro and when using the iPad on its own that has never happened. I assume because the ipad on its own only outputs a mono signal.

Hi Jonathan,

Thanks for contacting us. So sorry for the late reply. Must’ve missed the notification for your new post.

Is this still a current issue? If yes, please kindly provide more information: