The Shure SE846 is noted for having tighter bass and more forward mids compared to the Westone 4R, with significant improvements in subbass presence.

The Westone W4 is praised for its balanced armature drivers, which offer superior detail and accuracy compared to other balanced armature IEMs, potentially justifying its premium price.

The SE846 offers customizable filters, which is highlighted as a significant advantage over the Westone 4R.

Some users experienced fatigue with the SE846, possibly due to its rolled-off treble, despite its lush and intimate mids.

Without the filters, the W4R becomes highly sensitive to tip selection, with smaller Westone Star tips improving bass response compared to deeper insertion tips like Shure triple flanges.

Initial reactions to the W4 often include a perception of sibilance, but acclimatization over time leads to a preference for its detailed sound signature.

The Shure SE846 is often available for around $750 on platforms like Massdrop, offering a potential price advantage.

Discussions highlight the diminishing returns in sound quality between price tiers, noting that the W4 may not significantly outperform less expensive options like the W3.

Universal IEMs like the SE846 are preferred for their resale value and low-profile design over custom IEMs, which may need remolding as ear canals change.

Post-modification, the W4R is less claustrophobic in vocal presentation, offering a more open soundstage while maintaining an "in your head" experience.

Users find the W4 remarkably versatile, excelling across genres from classical to rock, especially when paired with high-quality .flac files and a decent DAC.

The Westone W4R's housing is primarily held together by clips with minimal, often dried-out glue, making disassembly relatively easy but potentially fragile.

The Westone W4 is noted for its rigorous quality control, with each unit undergoing thorough testing to ensure performance, mirroring practices seen in professional audio gear.

Removing the filter from the W4R alters its sound signature significantly, increasing treble and staging but reducing bass presence.

Owners report that removing the filter enhances treble resolution and staging, but can lead to a recessed lower midrange and less bass.