We have been 2 years AC401, which (even breathing) überträt really any noise. It has many disadvantages, such as for short cable, strong noise, a display which illuminates the whole room, .... but it transfers EVERYTHING. For 2 baby we wanted to try an alternative now, the Nuk and Avent have tried both, unfortunately, far too quiet, now the AC 420D .... absolute scrap volume while still ok, the usual drawbacks still and transferring bad ....... we buy now somewhere a used AC401 (approx 2 to 3 years old), you can live with, hopefully. One star because 0 is not.
