The SE846 are in-ear monitors with a bass-centric sound in its stock configuration. Its most standout features are the interchangeable sound filters inside the earpieces that can drastically alter the overall sound.
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Pro Excellent bass reproduction, full and forward mids along with smooth highs
The bass is full, has great depth and hits with a lot of power and slam. The mids are also full and forward. Vocals, guitars and keys sound very clear and they are very easy to appreciate. The highs have a good amount of detail but are slightly rolled off, making these sound smooth.
Pro Sound filters can be swapped to alter the sound
The SE846 comes with two extra sound filters which you can swap the stock one to. There is a set of filters for a more bassy sound, and another set for a more treble-centric sound signature. The filters can be swapped out using the included tool to open up the earpieces.
With this feature, you will be able to actually change the sound to further suit your preference.
Pro Removable cables
It uses high quality MMCX connectors, making the cables removable. This should make it easy for you to swap out to different cables for different purposes or to easily replace damaged ones.
Pro Includes plenty of accessories
Along with the interchangeable sound filters, the SE846 comes with a generous accessory pack which includes a selection of ear tips, a carrying case and a cleaning tool.
Con Treble may not be bright/airy enough
While these headphones still offer a good level of detail, you may find the sound to be a bit too smooth or muddy due to the rolled off highs.