Common, not that drastic :) But I do agree, the width of soundstage shrinks...
- 1,251 Posts. Joined 10/2013
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I dunno about iem's (I dont have any other then re 400B in possesion), but on full sized momentums the sound stage locks inside the head when used withot the adapter. I've seen measurments that the channel separation (hope that I translated the term correctly) without adapter is only 18 dB istead of 90 or something. This is pretty much what I hear on momentum - the crosstalk is so big that stereo image is severely reduced