As the subject says, does the Atom HE have balance controls for the headphone stage? I can see the app allows for the pre-amp stage to be balanced.
I normally use Roon to deliver the stream, so DSP is available to increase one side to cope with a small amount of hearing loss; my right ear is -1.6db across all frequencies.
Yes it was a balance but it’s only via the Naim app it’s not physical. It’s fully analogue with digital control. I can’t see why it won’t work for headphones as well it does on the regular Atom.