Sound is neutral with a slight mid bass tilt.  Highs and lows are well extended.  Sound stage is large for an iem.  The bass has some impact without being boomy.  The treble is clear without roughness.   Don't pull hard on the cable.  The strain relief is not strong.  Hold the Trumpet by the "mouthpiece" end when handling them.   If you have the Trumpets, you should try these memory phone tips from lostearbuds on ebay.  They have transformed my Trumpets from unwearable to wonderfully comfortable and full sounding.  ...