---
product_id: 567354161
title: "in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians"
brand: "keephifi"
price: "VT9733"
currency: VUV
in_stock: true
reviews_count: 13
category: "Keephifi"
url: https://www.desertcart.vu/products/567354161-in-ear-monitor-headphones-kz-castor-improved-bass-hifi-earphone
store_origin: VU
region: Vanuatu
---

# Dual dynamic drivers for rich sound 2PIN-C detachable cable 16-stage tunable acoustic filters in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians

**Brand:** keephifi
**Price:** VT9733
**Availability:** ✅ In Stock

## Summary

> 🎶 Tune in, stand out — sound that’s as sharp as your hustle.

## Quick Answers

- **What is this?** in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians by keephifi
- **How much does it cost?** VT9733 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/567354161-in-ear-monitor-headphones-kz-castor-improved-bass-hifi-earphone)

## Best For

- keephifi enthusiasts

## Why This Product

- Trusted keephifi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Noise-Isolating Comfort:** Enjoy immersive music with superior noise isolation and included silicone eartips that fit all-day without fatigue.
- • **Plug & Play Versatility:** Universal 3.5mm jack and detachable cable make these wired IEMs perfect for laptops, phones, and pro music gear.
- • **Precision Craftsmanship:** Built with 0.01mm precision injection molding and a sleek alloy face cap for durability and timeless style.
- • **Studio-Grade Dual Drivers:** Experience crystal-clear highs and punchy bass with innovative dual dynamic drivers designed for the harmonic FR curve.
- • **Customizable Sound Profiles:** Fine-tune your audio with 16 unique sound profiles via professional 2-stage acoustic filters—tailor your listening like a pro.

## Overview

The KZ Castor In-Ear Monitor Headphones deliver professional-grade audio with dual dynamic drivers and 16-stage tunable filters, wrapped in a precision-engineered, noise-isolating design. Perfect for musicians and audiophiles seeking customizable, high-fidelity sound on a wired, detachable cable platform.

## Description

Product description Recommended Bundles KZ Castor and KZ Taurus KZ Castor and Type-C Mic IEM Cable KZ Castor and 3.5mm Headphone Adapter KZ Castor and ZC02 Waterproof Earbud Case KZ Castor and KB07 Eartips 2DD Earbuds for HiFi Music Type-C plug cable for smart phone and mac book devices. Transfer Music in Real Pure Sound Waterproof earbud case for headphone take out protection. Colorful premium silicone ear tips for KZ Castor KZ Castor in Ear Monitor Headhphones, Bass IEMs KZ Castor in Ear Monitor Headphones 2 Versions Silver-Harman Target Version Frequency: 20-40000 Hz Impedance: 31-35Ω With the Harman FR curve as its tuning target, whether it's in terms of parameter performance or sound perception, it outperforms most flagship products from other brands. Black-Impressed Bass Version Impedance: 16-20Ω Based on the Harman FR curve, enhancing low-frequency sensitivity and dynamic performance ,achieving an unstoppable low-frequency experience. Simultaneously, the mid and high frequencies seamlessly align with the Harman FR curve. 2 Dynamic Driver Top and Bottom Stacked Cavity Deploy a 10mm magnetic dynamic driver and a 8mm dynamic driver Precision of the integrated injection molding process is theoretically more than 10 times higher than traditional 3d printing technology. Improved Bass Version 4 Tuning Mode-DIY Your Music Output Preference Switch 1 on: Bass increased by 1dB Switch 1&2 on: Bass increased by 2dB Switch 3 on: Mid and high frequency increased 1dB Swithc 3&4 on: Mid and high frequency increased 2dB what situations are these headphones suited? It can be used with a DAC/amp which enhances bass performance. Ideal for live performances, connecting electric guitars, gaming, and commuting audio. Suitable for studio musicians, singers, gamers. what situations are these headphones suited? It can be used with a DAC/amp which enhances bass performance. Ideal for live performances, connecting electric guitars, gaming, and commuting audio. Suitable for studio musicians, singers, gamers. What are the sound characteristics of the KZ Castor? Sub bass extension is excellent, with pretty thunderous bass that isn't overpowering or boomy. Highs are very detailed without extreme harshness. Users enjoy using this product to listen to genres such as EDM, R&B, and trap etc. What are the sound characteristics of the KZ Castor? Sub bass extension is excellent, with pretty thunderous bass that isn't overpowering or boomy. Highs are very detailed without extreme harshness. Users enjoy using this product to listen to genres such as EDM, R&B, and trap etc. What if these earbuds don’t sound the way you want? That doesn’t necessarily mean you don’t like our product! You can customize the sound to your preferences using an equalizer like EQ Auto or the specific sound effects offered by certain apps. What if these earbuds don’t sound the way you want? That doesn’t necessarily mean you don’t like our product! You can customize the sound to your preferences using an equalizer like EQ Auto or the specific sound effects offered by certain apps. The sound from a single earbud has dropped by more than 50% in a short period? Please check the connection between the connector and the earbud to ensure it is secure. Verify that the connector and earbud are oriented correctly. Next, try connecting to a different device. If the issue persists, please let us know. The sound from a single earbud has dropped by more than 50% in a short period? Please check the connection between the connector and the earbud to ensure it is secure. Verify that the connector and earbud are oriented correctly. Next, try connecting to a different device. If the issue persists, please let us know.

Review: Ya, sounds really good! - In a word "detail", these have way more detail than my Pixel Buds (which I like). The stereo image is good. The sound quality is good. These things seem to have a balanced frequency response when I listen to music. Bright vocals. Good low end without needing to turn up the volume to 100%. Yet when I did turn it up they got loud and are punchy from low to high. When I listened to pink noise, the upper mid range is louder than the other frequencies. Not a deal breaker at all. Normally I use Comply foam tips with earbuds. These were good with the large tips that were in the box. So I listened to these on my Pixel 8 Pro via a USB adapter. I listened to Justin Timberlake's new song "Drown". I also listened to some songs from BEP "Energy Never Dies". I paid $17 for these! The quality to value is massive (quality really good / ultra low price). I won't say these KZ DQS in ear monitors/ear buds are perfect. But I will say they are really good and enjoyable. I'm glad I bought them. I will buy more (one in my backpack, one at work, ane at home. Update - March 8, 2024 I put some unused Comply foam tips on them and they really helped to reduce noise around me. But my Comply tips are large and aren't as comfortable as the stock tips that came with KZ DQS. I plugged them into my laptop, played Apple Music's Hi-Rez audio and I am still content. In fact I happen to have some $99 Sennheiser HD 280 Pro headphones where I am at right now, AND... the KZ DQS are more enjoyable. Dare I say, sound way better? Um, ya. Ya they do. Probably cuz I don't have an external DAC and headphones amp for the Sennheiser to make it a fair comparison. The KZ DQS gets plenty loud and would blow up my ears if they got louder. I will to remember to add updates to this review over time.
Review: Probably the best IEM under 20$(For those wanting a bit bass-heavy) - I have used IEMs for the past 5 years ranging from a variety of price points. This IEM is not the best out there, but for the price, it’s phenomenal. The build quality is excellent. Although the buds are quite heavy, it’s not uncomfortable at all. It sits perfectly on the ear. The ear tips might have been a bit better but still, it’s not bad. The cable is the same, not entirely bad, but other vendors have more high quality cables. Would have been nice to have a pouch but I’m nit gonna ding it for that for the price it’s asking The biggest thing for me was the sound clarity with the increased bass.I wanted something a bit bass heavy than something more balanced while maintaing a clean soundstage. This hits the right spot definitely. The bass is punchy and tight, whilst not making the mids and highs muddy. The mids are a bit recessed but that is expected. The highs are clear and not piercing which some IEM tend to do. The stock switch configuration ( there are 4 switches for increasing the sound level) isn’t bad, but making the first three on does make the sound more enjoyable to my preference as I listen to hip-hop, R&B and EDM more than other genres. I would definitely give the sound a 10/10 compared to others like the Waner, Salnotes and Zero 2. They are also good, but the sound is rather balanced and lacking in the bass department compared to the Castor. P.S. Sound Quality and Preference is entirely subjective. What might be good for me might sound the worst for you. If you prefer a good entry point IEM which tends to be a bit bass heavy, I would highly recommend the Castor. It does compete with other earbuds in much higher price points. Apart from the eartips and the cable being a bit cheap, it is overall one of the best IEMs under 20$!

## Features

- 【Innovative Dual Dynamic Drivers Structure】KZ Castor studio headphones adopts an innovative dual-dynamic driver acoustic design in pursuit of the harmen FR curve sound. Top and bottom stacked cavity structure endows more space to vibrate sound, mantain phenomenal acoustics. Silver version keeps the basic while black version adds an additive improved bass.
- 【Exquisite Workmanship More than 3D Printing】With integrated injection molding process, kz in ear monitor makes precision of internal support structure around 0.01mm, 10 times higher than traditional 3D printing technology.The alloy face cap gives the in ear headphone a classical and elegant shape and smooth texture, simply exquisite and good-looking.
- 【Tuning Adjustable】The in ear headphones wired is equippend with professional acoustic filters that support 2-stage adjustments for higher frequency. Users can fine-tune their sound preferences to create 16 different audio profiles based on their preferred music styles.
- 【Excellent Sound Performance】The musicians stage iem earbuds plays well in the whole soundstage. Treble is revealing and and not overly smooth nor intense. Mids are good with very little bleed from mid bass. Vocals are good but they are slightly recessed. The earbuds capture every aspect of the sound, outperform most iems.
- 【Detachable Cable Design】Features 2PIN-C detachable cable connection allowing for easy cable replacement and customization to suit different audio setups and user preferences.
- 【Noise Isolating Design】The in-ear monitor design provides effective noise isolation, blocking out external sounds for an immersive listening experience suitable for singers, musicians, and audio enthusiasts.
- 【What You will Get】You will get 1 pair of earbud, 1 instruct manual, and 2 pairs replacemnet silicone eartip. Keephifi Audio is the legal distributor for KZ products. You will get a replacement for any defective reasons during 14 months. Thanks for shopping.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CHY291YZ |
| Additional Features | Lightweight |
| Age Range Description | Adult |
| Antenna Location | Music |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #1,912 in Electronics ( See Top 100 in Electronics ) #210 in Earbud & In-Ear Headphones |
| Brand | keephifi |
| Brand Name | keephifi |
| Built-In Media | Cable, User Manual, silicone eartips |
| Cable Features | Detachable |
| Color | BassBlack |
| Compatible Devices | Laptops, Desktops, Tablets, Cellphones, Music Production Equipment |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Control Type | Media Control |
| Customer Package Type | Flat Free Package (FFP) |
| Customer Reviews | 4.4 out of 5 stars 1,465 Reviews |
| Ear Placement | In Ear |
| Earpiece Shape | Rounded |
| Enclosure Material | Metal Cover, Resin Cavity |
| Form Factor | In Ear |
| Frequency Range | 20-40000Hz |
| Frequency Response | 40000 Hz |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In Ear |
| Impedance | 31 Ohms |
| Is Autographed | No |
| Is Electric | No |
| Item Weight | 0.06 Kilograms |
| Manufacturer | keephifi |
| Model Name | 6950 |
| Model Number | 6950 |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Sensitivity | 105 dB |
| Series Number | 6950 |
| Specific Uses For Product | Music |
| Style Name | no Mic |
| Subject Character | in ear monitor, wired earbuds, wired earphone, iems, studio headphones, kz in ear monitor, in ear headphones wired, iem earbuds, iems for gaming, iem earbuds |
| Theme | in ear monitor, wired earbuds, wired earphone, iems, studio headphones, kz in ear monitor, in ear headphones wired, iem earbuds, iems for gaming, iem earbuds |
| Warranty Description | 1 year warranty |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Wired |

## Product Details

- **Brand:** keephifi
- **Color:** BassBlack
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 31 Ohms

## Images

![in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians - Image 1](https://m.media-amazon.com/images/I/61-k-LgJsAL.jpg)
![in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians - Image 2](https://m.media-amazon.com/images/I/71AHNkvLz6L.jpg)
![in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians - Image 3](https://m.media-amazon.com/images/I/71Yx1TSy3qL.jpg)
![in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians - Image 4](https://m.media-amazon.com/images/I/71pQUycIcmL.jpg)
![in Ear Monitor Headphones, KZ Castor Improved Bass HiFi Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds with Detachable Cable for Singers Musicians - Image 5](https://m.media-amazon.com/images/I/71jtBL6e0IL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Questions & Answers

**Q: what situations are these headphones suited?**
A: It can be used with a DAC/amp which enhances bass performance. Ideal for live performances, connecting electric guitars, gaming, and commuting audio. Suitable for studio musicians, singers, gamers.

**Q: What are the sound characteristics of the KZ Castor?**
A: Sub bass extension is excellent, with pretty thunderous bass that isn't overpowering or boomy. Highs are very detailed without extreme harshness. Users enjoy using this product to listen to genres such as EDM, R&B, and trap etc.

**Q: What if these earbuds don’t sound the way you want?**
A: That doesn’t necessarily mean you don’t like our product! You can customize the sound to your preferences using an equalizer like EQ Auto or the specific sound effects offered by certain apps.

**Q: The sound from a single earbud has dropped by more than 50% in a short period?**
A: Please check the connection between the connector and the earbud to ensure it is secure. Verify that the connector and earbud are oriented correctly. Next, try connecting to a different device. If the issue persists, please let us know.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Ya, sounds really good!
*by K***J on March 7, 2024*

In a word "detail", these have way more detail than my Pixel Buds (which I like). The stereo image is good. The sound quality is good. These things seem to have a balanced frequency response when I listen to music. Bright vocals. Good low end without needing to turn up the volume to 100%. Yet when I did turn it up they got loud and are punchy from low to high. When I listened to pink noise, the upper mid range is louder than the other frequencies. Not a deal breaker at all. Normally I use Comply foam tips with earbuds. These were good with the large tips that were in the box. So I listened to these on my Pixel 8 Pro via a USB adapter. I listened to Justin Timberlake's new song "Drown". I also listened to some songs from BEP "Energy Never Dies". I paid $17 for these! The quality to value is massive (quality really good / ultra low price). I won't say these KZ DQS in ear monitors/ear buds are perfect. But I will say they are really good and enjoyable. I'm glad I bought them. I will buy more (one in my backpack, one at work, ane at home. Update - March 8, 2024 I put some unused Comply foam tips on them and they really helped to reduce noise around me. But my Comply tips are large and aren't as comfortable as the stock tips that came with KZ DQS. I plugged them into my laptop, played Apple Music's Hi-Rez audio and I am still content. In fact I happen to have some $99 Sennheiser HD 280 Pro headphones where I am at right now, AND... the KZ DQS are more enjoyable. Dare I say, sound way better? Um, ya. Ya they do. Probably cuz I don't have an external DAC and headphones amp for the Sennheiser to make it a fair comparison. The KZ DQS gets plenty loud and would blow up my ears if they got louder. I will to remember to add updates to this review over time.

### ⭐⭐⭐⭐⭐ Probably the best IEM under 20$(For those wanting a bit bass-heavy)
*by A***. on September 1, 2024*

I have used IEMs for the past 5 years ranging from a variety of price points. This IEM is not the best out there, but for the price, it’s phenomenal. The build quality is excellent. Although the buds are quite heavy, it’s not uncomfortable at all. It sits perfectly on the ear. The ear tips might have been a bit better but still, it’s not bad. The cable is the same, not entirely bad, but other vendors have more high quality cables. Would have been nice to have a pouch but I’m nit gonna ding it for that for the price it’s asking The biggest thing for me was the sound clarity with the increased bass.I wanted something a bit bass heavy than something more balanced while maintaing a clean soundstage. This hits the right spot definitely. The bass is punchy and tight, whilst not making the mids and highs muddy. The mids are a bit recessed but that is expected. The highs are clear and not piercing which some IEM tend to do. The stock switch configuration ( there are 4 switches for increasing the sound level) isn’t bad, but making the first three on does make the sound more enjoyable to my preference as I listen to hip-hop, R&B and EDM more than other genres. I would definitely give the sound a 10/10 compared to others like the Waner, Salnotes and Zero 2. They are also good, but the sound is rather balanced and lacking in the bass department compared to the Castor. P.S. Sound Quality and Preference is entirely subjective. What might be good for me might sound the worst for you. If you prefer a good entry point IEM which tends to be a bit bass heavy, I would highly recommend the Castor. It does compete with other earbuds in much higher price points. Apart from the eartips and the cable being a bit cheap, it is overall one of the best IEMs under 20$!

### ⭐⭐⭐⭐⭐ Great Headphones, better price
*by R***O on April 23, 2026*

These are excellent headphones, great clear sound, transparent, and a great value. I do recommend these headphones.

## Frequently Bought Together

- KZ Castor in Ear Monitor Headphones, HiFi Improved Bass Earphone Sound Tunable Noise Isolating IEMs, Dual-Dynamic Driver Wired Earbuds, 2PIN-C Detachable Cable for Singers Musicians
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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-11*