3.Problems with the sound output of the E12A.
A: If the sound output of the A5/E12A/E12DIY crackles or cuts out on one or both channels, the cabling on the line in interconnect and / or the headphones may be broken or the contacts oxidized. Please try changing to another interconnect and / or pair of headphone. If the jacks on the cabling have oxidized you may try cleaning them using contact cleaner or rubbing off the oxidation with a piece of tissue. If none of the above works, please post the thread or send email to email@example.com, and we will help you as soon as possible!