KZ - Castor Pro (Harman Target with Improved Bass Version)
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Reddit Reviews:
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Last updated: Dec 25, 2025 Scoring
Liked most:
1632
60
"Literally couldn't think of any pair of IEMs + dongle dacs could sound as analytical as the C3P+ for around $70. ... detail is just sooo much better. The C3P+ is just leagues ahead the I5 in terms of detail and resolution. ... the C3P+ is actually the closest sounding one to really expensive iems or headphone that I have."
"Crazy good from the jump! ... When you factor in they're only $99 and go toe-to-toe with Bose QC Ultra at $299, this is the deal of the year!"
"Can't recommend them enough for the value, sound like $200 earphones."
463
156
"Back to back in my opinion they blow the airpods pro 2 out of the water in clarity, separation, and punch."
"Literally couldn't think of any pair of IEMs + dongle dacs could sound as analytical as the C3P+ for around $70. ... detail is just sooo much better. The C3P+ is just leagues ahead the I5 in terms of detail and resolution. ... the C3P+ is actually the closest sounding one to really expensive iems or headphone that I have."
"these have the deepest, cleanest and "tumpiest" bass out there."
64
26
"They have great bass for the price — going surprisingly deep without sounding bloated or boomy. Good punch. Songs that have midrange bass or cellos really shine here (ex. “The Curse” by Agnes Obel, “The Equaliser” by The Midnight)"
"The switch actually has quite a few influences. ... The Castor pro bass UUDD can bring out powerful bassheads, DDUU can bring out not too many low notes and enough high notes. ... The influence of the switch is actually easy to feel, and it works well. ... It usually plays a large role in making adjustments to be more neutral sound."
"just enough punchy bass to make gunfire and explosions sound right."
21
5
"The soundstage is wider than the bass version. ... This is something you wouldn't easily expect from an iem at this price point. ... super wide soundstage considering the price. ... Definitely one of the best choice for gaming."
"For gaming it's so good. ... The imaging and sound staging is kinda perfect for games."
"In terms of sound quality it's clearly superior in terms of staging and provides a richer, fuller experience."
19
4
"The switch actually has quite a few influences. ... The Castor pro bass UUDD can bring out powerful bassheads, DDUU can bring out not too many low notes and enough high notes. ... The influence of the switch is actually easy to feel, and it works well. ... It usually plays a large role in making adjustments to be more neutral sound."
"u can always have the advantage to tune the eq switches to reach a similar output like chu2 ... the whole reason 80% in r/iem like the castor is due to its soundstage and the ability to physically tune the switch ... the switches can be tuned according to ur preference, but most like the switches in 1234, up-up-down-down"
"the Castor pro bass edition with the 4 switches are AWESOME!!! ... the bass is just right(I love bass)"
Disliked most:
21
128
"The fit just doesn't feel right ... its heavy after an hour of use so who cares about battery life ... may as well get some over ears for comfort."
"I had the same problem and returned them."
"The Sony headphones did not fit properly ... I lost one pair"
92
42
"I don't feel any difference in bass"
"However, the sub-bass isn ’t particularly strong and can feel a bit sluggish when stacked against higher-end models, as the layering and separation in the low-end just aren ’t there, which can lead to a muddled presentation when a lot of instrument is going on in the mix."
"Unusable without hefty EQ (-10dB @ 185Hz). ... That spike at ~180Hz is real and ruins low-mid end completely. ... Any sound in (or passing trough) ~180Hz region has some strange tin can high pitched hollowness/echo. ... Bass guitars sound strange, drums sound strange, low vocals sound strange... Any background hum in music/movies/games sounds strange. ... It is also very hard to EQ out - spike is very high and in very narrow range. So you need good EQ software to apply a lot of negative EQ in very narrow range (used EQ APO+PEACE). ... Once EQ is applied these sound quite nice. Good low end, clean mids and nice highs. Without EQ they just sound wrong."
18
39
"supermix4 hurt my ears, too much treble for me ... I didn’t think the supermix 4 sounded much better, but the highs were much more aggressive. I played for 1/2 hour and was in pain."
"I found the SuperMix 4 too bright and fatiguing until I tamed it a bit with SpinFit W1s. ... (Otherwise, I could only listen to the Fall Out Boy discography for ~30 minutes. No such discomfort with my other IEMs.)"
"everything is just super high pitched n supermix and genuinely unusable just because of how nassally and unnatural it makes female voices sound. ... And after a few days I just realized how ear piercing and unnatural the supermix was and so that was kinda it, I didn't wanna use supermix for music anymore."
13
10
"There appears to be a massive dip in the upper mids low treble on the castor pro bass ."
"The lower notes are relatively high and the attenuation is fast. You may not feel the lower notes very much. Mid-tone is not noticeable, either."
"The Chu 2s are way better all around than the Castor Pro Bass - way clearer detail, midrange, treble"
6
28
"deuce awful for competitive gaming"
"Bass version - Best avoid with competitive games, especially Valorant. ... QDC and heavy as well."
"the castor pro (bass edition) for VALORANT is BULLSHIT."
Still actually the 7HZ Zero 2. Bunnys spike in the uppers are not fun, Castor pro bass is a bit odd but enjoyable at least, waner 2 is tooo vocal. Pure and hexa are mid. Pure neither has enjoyable bass or mids. Hexa is shouty. EM6L is thin. Explorer is dark asf. The only one of these I've had moments of "Oh shit" and jumping up because I thought the sound was next to me, was from the Zero 2. My collection goes into the kilobucks
r/iems • Best All Rounder IEMs under $120-$130. ->I had just the OG with Bass , very good The pro with bass is a different beast. If you want relaxed smooth thick bass , the OG is better , the pro has somewhat coloured enhanced mids and all cymbals sound the same . Imagine the old one note bass of cheap speakers , now flip this into treble . I prefer the OG bass than the pro bass
r/iems • KZ Castor Pro: A Quick Impression and Comparison to the Original Castor. ->There appears to be a massive dip in the upper mids low treble on the castor pro bass . Also when there’s a lot of badly constructed treble in the track, the OG sounds better Another thing, at low volumes the OG carries the bass better I have both and like them both , but the OG version plays better on most tracks except where there is too much bass
r/iems • My Quick Review of the Kz Castor Pro (Bass Edition) ->previously i'd say Rosefinch, but i got CCA Trio, and it technically is pretty much the same thing as Castor Pro Bass version. It's gonna be a bit less rumbly, but definitely not less powerful, and in terms of tone and technicalities imo it's an upgrade as well.
r/iems • Best Bass Iems Under $50??? ->I'm enjoying the lower ends so much that I'm starting to think I should not be enjoying songs this much for such a cheap IEM 😁
r/iems • The Castor Pro bass was worth every penny for a new IEM user like me ->I like bass so I guess it's preference on the cheaper iems
r/iems • The Castor Pro bass was worth every penny for a new IEM user like me ->if you have access to zvx pro i'd go for those otherwise i'd take the kz gale as a more balanced allrounder or caastor pro if you're a basshead
r/iems • Cheap kz iem recommendation ->Is the soundstage better than the Hola? My left Hola earbud got damaged, so I'm considering buying a new one. So far, I've only tried the Castor. While it was good, it lacked the soundstage of the Hola.
r/iems • Got a new FiiO JD1 type-C ->Buy kz castor pro.
r/headphonesindia • Suggest me good wire earphone under 2K. ->just got kz castor bass version yesterday and the left sounded weaker than the right, so I'm returning them. They probably do have a quality issue (which I dont blame since its so cheap)
r/iems • Why almost everyone wants to avoid KZ? ->For me, Wan'er is better than Castors. I've used both and prefer wan'er 8/10 times.
r/iems • Wan’er S.G’s I don’t get the hype ->You are not the target market for them, they make entry level and midrange products at a very good price for performance rate . Eg, Kz Castor pro
r/iems • Love them or hate them, KZ changed the game ->As I said they are not for people who have a budget of 100$+, you are not the target market. 😅. You have tasted elixir so these would be like stale beer. These are for the poor chaps like me from 3rd world countries whose budget would be around $50 at max Kz's cater for newbies that want a good pair of IEMs for a cheap price. The castor is like 10-12 bucks . And it's very good relative to its competitors. Metal/resin body + dual drivers.
r/iems • Love them or hate them, KZ changed the game ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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