Bought the Castor Bass as a basshead but found the bass weak, thinner than their ZSN Pro.
Quick note: Some links are affiliate links. We earn a tiny commission if you buy (at no cost to you). Keeps the lights on!
Reviews
Add your reviewSort: NewestMost helpful
Their OG Castor Bass has no bass punch and almost no rumble; they suspect it's broken.
Finds the standard Castor a decent Harman set and the Bass edition fun and energetic for rock, pop and funk.
The non-Pro Castor kind of impressed them, though its mids sound distant and unengaging.
As a basshead, the Castor Bass with all switches up is their favourite.
Has the silver Harman-target Castor and wants to try another IEM.
Their Castor Improved Bass bought last month now has a 50% volume drop.
Their KZ Castor looks great, is cheap and has a pleasing metal shell.
The Castor Bass has satisfied them for 2 years with an upgraded cable and tips.
Owns many KZ models and finds the Castor Harman the worst in every way; it sounds wrong.
Bought the Castor Bass as their first IEM and it exceeded expectations.
Just got their first Castor after the ZSN Pro and loves how clear it sounds.
Got the Castor Bass and agrees it muddies the midrange slightly.
Got the Castor for under $40 CAD and loves the quality and comfortable fit.
Their first IEM, the Castor Bass Improved, sounds surprisingly balanced with less bass punch than expected.
Their Castor Improved Bass beats their $90 EarFun Air 4 Pro.
Picked up the Castor for $30 CAD and calls it the real deal with impressive build quality.
Their standard Castor is their first IEM and they really like it.
Is pretty satisfied with their 2-year-old Castor Improved Bass but wants an upgrade.
The white Castor is still their most used IEM.
Owns the OG Castor and prefers its size; KZ went backwards with the Pro.
Finds the Castor Bass still too treble-intense for hardstyle; synths and high vocals hurt.
Their Castor Bass developed severe channel imbalance.
Uses the basic Castor Harman for PS5 gaming and likes its sound for the price.
Is outraged by the Castor Bass: good definition but no bass or sub-bass versus a 90-cent AM6.
Their Castor Harman, bought a year ago, drops sound very often.
After 6 months the Castor is an investment they don't regret; oxidation hasn't affected the sound.
The KZ Castor Bass causes painful in-canal pressure for their very narrow ear canals, even with S tips.
Owns the regular silver KZ Castor (non-Pro) and finds it kind of bright.
Has used the KZ Castor Bass Edition daily for two years on a second cable: one of the best they've used, more detailed than a Koss KSC75 or Porta Pro, though the bass can overwhelm.
Has been loving the KZ Castor from their phone via an Apple USB-C adapter.
Thinks the KZ Castor is great, using a KZ AM02 DAC.
Using the KZ Castor Bass Improved but finds it uncomfortable after a while and wants to upgrade.
Owns the KZ Castor Bass Edition and calls it a fun V-shaped set, not tuned for detail, imaging or resolution.
Comparing their gifted KZ Castor Bass Edition on an Audiocular Aura Pro DAC against CMF Buds Pro 2, couldn't hear a significant difference.