BA.
interesting comments...thanks.
from my checking it seems it depends on impedence of the headphones being used.?
i just checked audioscience review which publishes extensive detailed test charts.
maybe your phones match well with the phone out ?
but others dont ?
julian krause also has reviewed the 2i2 with detailed unbiased charts.
i'll post the link after breakfast...!ol
best
om
Not really interested in his review, but maybe others are

My main 'phones are Sennheiser HD598, but I have a few other sets that all perform equally well.