For some reason the exterior of my B400's are quite 'sticky'. I've tried carefully applying a damp towel on more than one occasion, but for some reason it just seems to make it even stickier. It seems something with the paint used, and as if it's wearing off. Possibly due to being a pre-production demo unit that was sent out just before the final version.
Overall I find the sound of the B400's rich, vivid and velvety, but a bit more laid back than my usual preference; lacking or at least giving the impression of lacking in frequency extension on both sides, and dynamics. After owning these for quite a while I find myself reaching for the Advanced M4 ($40) when it comes to electronic or pop music for spot-on dynamics / 'punch' (harder hitting drums), TFZ Exclusive 1 ($45) when I want detail, speed and great instrument separation, or the RHA T20 (non-mic version) ($192) for a sound that's very pleasing: moderately laid back as well but more 'crisp', and well textured, giving a very pleasing presentation with the likes of ambient or atmospheric noise. As for the B400's, I tend to use them only for occasional rock or otherwise brightly mastered rhythmic music... unfortunately almost never getting any of my time due to the fact that I only use IEMs on the move - but for some reason the B400's for me never seem to get a 'bass seal' in a bus or airplane as they do at home.
For now, I actually enjoy bringing 4 pairs of IEMs along for long trips, so I have a choice of sound signatures for different recordings, or for a better seal according to ambient air pressure.
As always, the above is IMO, but based on considerable experience
Overall I find the sound of the B400's rich, vivid and velvety, but a bit more laid back than my usual preference; lacking or at least giving the impression of lacking in frequency extension on both sides, and dynamics. After owning these for quite a while I find myself reaching for the Advanced M4 ($40) when it comes to electronic or pop music for spot-on dynamics / 'punch' (harder hitting drums), TFZ Exclusive 1 ($45) when I want detail, speed and great instrument separation, or the RHA T20 (non-mic version) ($192) for a sound that's very pleasing: moderately laid back as well but more 'crisp', and well textured, giving a very pleasing presentation with the likes of ambient or atmospheric noise. As for the B400's, I tend to use them only for occasional rock or otherwise brightly mastered rhythmic music... unfortunately almost never getting any of my time due to the fact that I only use IEMs on the move - but for some reason the B400's for me never seem to get a 'bass seal' in a bus or airplane as they do at home.
For now, I actually enjoy bringing 4 pairs of IEMs along for long trips, so I have a choice of sound signatures for different recordings, or for a better seal according to ambient air pressure.
As always, the above is IMO, but based on considerable experience
Last edited: