  Shock waves are simulated passing through the Alfv\'en-acoustic equipartition
layer in a stratified isothermal magneto-atmosphere. The recent ray-theoretic
calculations of N\'u\~nez (2019) predicted smoothing of the shock through this
layer, causing both the fast and slow components to emerge as continuous waves.
However, it is found that the partial mode conversion expected from linear
theory for oblique incidence of the shock on the magnetic field is accompanied
by a smoothing of the slow-shock only, whilst the fast-shock persists.
Explanations are presented based on MHD mode conversion and shock theory.
