Some good info posted above.
For folks who are Deus lite owners,,or even folks who are fulł Deus owners,,,but who may run their units as Deus lite setups or buy extra coil and rod and do so
Something to say here about ground balance.
I encourage full Deus unit operators to do a pumping ground balance,,,after done bob your coil over clean ground with disc set to 0.
Listen to what you hear as the coil is lowered to ground with detector balanced.
You should hear some noise.
Now if you tried to balance Deus manually using re ore or headphone module,,,a person might be tempted to balance where the coil is silent upon approaching the ground.
But according to Deus programming,,this would not be a correct GB.
Folks experiement here with this,,you'll see moe what I am talking about.