I just got my new Valhalla.
And here is one question:
how long it takes to get to a stable situation?
I mean my new Valhalla infrequently produce some "bla~bla~". Is it because that the Valhalla is new and need time to adapt or some other problems?
In the same time, I should unplug the headphone and turn off the Valhalla or turn off the Valhalla then unplug the headphone?