... Which can be put to such a device! It is cheap and has a good sound. It can be heard no noise or the like and also addressed by other users loud operating noise can not be heard with me. This is, however, probably because of my good 8 year old Alpine cassette deck. Furthermore, it must be said that the trick to expand the the impellers only bednigt works (I speak from experience), as not every cassette deck without the wheels reads the device!