Redefining Hi-Res Audio with USB-C DAC HiFi Digital Earphones
Experience zero-latency transmission for seamless audio and enjoy convenient in-line control and crystal-clear communication with the HD microphone, designed for audiophiles, music lovers, and gamers who prioritize every millisecond, every Hi-Res music note. ST2 Nebula proves invaluable for immersive gaming, video watching, and music listening.
NebulaSound ST2: Driving Big Sound to Rival High-End desktop DAC
Pay for one IEMs, get a HiFi combo set – what a deal! Say goodbye to the traditional headphone jack with the HIDIZS ST2 Nebula, redefining Hi-Res audio with USB-C HiFi digital In-ear monitors featuring the high-performance DAC chip ES9281AC PRO. This small yet powerful built-in DAC unlocks every lossless detail. Unlike other In-ear Monitors, the 2-in-1 solution serves as an essential portable mini audio decoding device, enhancing powerful audio experiences and delivering Hi-Res music in various usage scenarios.
Nebula HiFi Digital Earphones: 10mm Dual Magnetic Dynamic Driver
With Hi-End-level components and HIDIZS customized 10mm High-Performance Dual Magnetic Circuit Dynamic Driver, certified as Hi-Res and tuned based on the H-2019 curve, this IEMs guarantees the highest audio quality.
For music enthusiasts and HiFi audiophiles, ST2 Nebula brings accurate audio response, balanced and natural sound, powerful low frequency, rich mid frequency, and moderate high-frequency extension.With a frequency response range of 20Hz to 40kHz, suitable for a variety of different music styles, especially pop, metal and rock, etc.
If you're a music lover looking to enhance your audio experience, a digital-to-analog converter (DAC) could be your answer. A DAC converts digital audio files from devices like laptops, smartphones, and tablets into analog sound waves, enabling you to enjoy music with superior quality.
Digital formats like MP3, FLAC, and Apple Lossless make music easy to store, but computers and speakers can't interpret these digital signals directly. That's where a DAC comes in, converting these signals back to analog for us to hear.
Investing in a good DAC is essential for anyone seeking better sound fidelity and balanced/mid/bass response. It significantly improves the performance of your headphones and speakers, transforming your listening experience. If you're ready to elevate your audio setup, consider adding a DAC—it’s a cost-effective way to unlock the full potential of your music.
When purchasing a pair of IEMs, a DAC & AMP or music player is often required to drive sufficient power for enjoying detailed lossless audio. However, with the HIDIZS ST2 Nebula's HiFi digital highbuilt-in DAC, you'll find a much more compact and lightweight design than Desktop DAC/Portable DAC & AMP, yet it maintains impressive ultra-low distortion performance.
With one purchase, you get a perfect combo to enter the authentic HiFi world—pay for one, get two high-quality products. Experience the world’s first HiFi USB-C DAC Digital In-ear Monitors, offering superior quality compared to Bluetooth wireless earbuds.
If you're a music lover looking to enhance your audio experience, a digital-to-analog converter (DAC) could be your answer. A DAC converts digital audio files from devices like laptops, smartphones, and tablets into analog sound waves, enabling you to enjoy music with superior quality.
Digital formats like MP3, FLAC, and Apple Lossless make music easy to store, but computers and speakers can't interpret these digital signals directly. That's where a DAC comes in, converting these signals back to analog for us to hear.
Investing in a good DAC is essential for anyone seeking better sound fidelity and balanced/mid/bass response. It significantly improves the performance of your headphones and speakers, transforming your listening experience. If you're ready to elevate your audio setup, consider adding a DAC—it’s a cost-effective way to unlock the full potential of your music.
When purchasing a pair of IEMs, a DAC & AMP or music player is often required to drive sufficient power for enjoying detailed lossless audio. However, with the HIDIZS ST2 Nebula's HiFi digital highbuilt-in DAC, you'll find a much more compact and lightweight design than Desktop DAC/Portable DAC & AMP, yet it maintains impressive ultra-low distortion performance.
With one purchase, you get a perfect combo to enter the authentic HiFi world—pay for one, get two high-quality products. Experience the world’s first HiFi USB-C DAC Digital In-ear Monitors, offering superior quality compared to Bluetooth wireless earbuds.
NebulaSound ST2: Delivering High-End Sound in a Compact Design
The HIDIZS ST2 Nebula USB-C DAC HiFi Digital In-ear Earphones feature the ES9218AC PRO decoding chip, providing exceptional audio quality with a PCM sampling rate of 32-bit/384KHz and Native DSD 64/128.
Hi-Res Audio Made Easy: USB-C Plug-and-Play for iPhone15 & More
With Hi-Res audio support and a high-performance DAC, it represents a significant audio upgrade for your latest smartphones, including iPhone 15, 15 Pro, and 15 Pro Max, iPhone 16, 16 Plus, Android phones, Mac, PC, or any other USB Type-C device accessing your favorite Hi-Res albums, podcasts, videos, games and more across all your devices. Simply plug and play without any additional setup.
Universal HiFi Compatibility: Effortless Integration Across Platforms
HIDIZS ST2 Nebula offers seamless compatibility across major operating systems, including Windows, iOS, macOS, Android, and HarmonyOS and more. With a professional audio digital-to-analog conversion solution in its USB-C connector, it delivers HiFi audio performance on mainstream multimedia platforms—whether you're using a computer, tablet, iPhone, or Android device.
Unlock Hi-Res/MQA Format: TIDAL, SPOTIFY, Apple Music and Beyond
Equipped with an independent decoding chip, the ST2 Nebula IEMs support up to 8X unfolding MQA online streaming media playback from multi platforms like Apple Music, Tidal, HiBy music or Spotify, experience every lossless detail with ST2 Nebula you've been missing out on when using AirPods Pro 2 (compressed Bluetooth connections) or any other Non-HiFi USB-C earphones.
Note: ST2 Pro version, ES9218AC PRO with MQA version, the actual unfolding factor depends on the playback device/software/audio file.
Enhanced Control and Clarity: Advanced In-Line Control and HD Microphone Support
The ST2 Nebula not only supports in-line control but also features a high-definition microphone. Plugging it in enables digital IEMs to convert microphone audio streams to 24-bit /48 kHz, ensuring clear voice transmission no matter calling or gaming.It discreetly elevates your on-the-go lossless audio experience.
* In-line control and HD microphone are not supported on iPhone Lightning models.
Zero Latency HiFi: Immersive Authentic Audio without Any Delay
With professional audio decoding, the ST2 Nebula Type-C in-ear earphones ensure zero-latency audio transmission. Featuring a wide soundstage and 20Hz-40kHz frequency response, they accurately reproduce audiovisual game scenes without delay, providing an immersive experience.
The 2-in-1 Solution: High-performace decoding DAC with HiFi in-ear monitors offer simplicity, efficiency, and portability for all scenarios, including commuting, homing, sporting, traveling, and entertainment.
See the Sound: Transparent Design with Sample Rate Indicator
Experience the ST2 Nebula’s innovative design with a transparent window that showcases its high-performance digital DAC. This feature offers a direct view of the ES9281AC PRO DAC decoding chip and intricate component layout inside the aluminum alloy shell. With the sample rate indicator, you can visually assess audio quality at a glance—each lighting effect represents a different sample rate, adding a captivating visual layer to your listening experience. Enjoy the seamless fusion of light, sound, and high-fidelity audio with the ST2 Nebula.
Unleash the Power of USB-C DAC HiFi Digital In-ear Earphones
Experience the richness, outstanding clarity, and detail in every note with its high-performance built-in DAC and the magic of 2-in-1 innovation.
HIDIZS Acoustic Special: Customized 10mm Dual Magnetic Circuit Dynamic Driver
The ST2 Nebula features a customized 10mm dual magnetic circuit dynamic driver crafted by the Hidizs Acoustic Laboratory. Its PU+PEEK composite diaphragm ensures uniformity and lightweight quality. The dual magnetic circuit design enhances efficiency, extends high frequencies, improves detail expression, and reduces nonlinear distortion for complete audio detail presentation.
Hi-Fi Compatible: Standard Detachable 2-Pin/MMCX IEMs with HiFi Digital USB-C Cable
HIDIZS offers a high-end USB-C audio cable featuring a powerful DAC and durable 0.78mm 2-pin connector, delivering strong audio and stable signal transmission. With output up to 70mW+70mW@32Ω, it efficiently drives any IEMs or headphones. No need for costly DAC & AMP combos—swap in any 0.78mm 2-pin or MMCX IEMs to experience this pioneering HiFi digital USB-C cable, perfect for audiophiles and music enthusiasts.
* HiFi Digital USB-C Cable for MMCX IEMs available separately.
High-Purity Oxygen-Free Copper Hi-End Professional Cables
ST2 Nebula features high-purity oxygen-free copper cables, renowned for their superior performance in the low and mid-range frequencies, providing rich, detailed sound reproduction with natural tonality and expansive soundstage. Encased in tightly woven textile material, these cables are durable, resilient, and lightweight.
Ergonomic Design for Long-Lasting Comfort
The earphone shell, crafted from German-imported Byer resin through a single molding process, offers stability, skin-friendly comfort, and durability. Its external structure is meticulously designed for a personalized fit, reducing external noise and ensuring long-lasting comfort for extended wear.
HIDIZS Tuning Style: Perfectly Aligned with H-2019 Target Curve
The ST2 Nebula digital music earphones are calibrated and tuned by the HIDIZS Acoustic Laboratory, adhering to the H-2019 target curve for accurate audio response. They offer balanced tonality, powerful bass, rich midrange, and moderate high-frequency extension, meeting Hi-Res audio standards for a HiFi-grade listening experience.
Hi-Res Certified Excellence: Rediscover Your Music with the HIDIZS
As an officially Hi-Res certified audio product, the HIDIZS ST2 Nebula meets the stringent standards set by the industry. Immerse yourself in the richness and detail of high-resolution audio, as every nuance and subtlety of your favorite tracks is faithfully reproduced. Rediscover your music collection and experience it like never before with the ST2 Nebula.
HIDIZS Liquid Silicone Ear Tips are made of high-permeability liquid silicone, designed ergonomically to snugly fit the ear canal. The customized pouch provided by HIDIZS ensures safe storage and prolongs the usage life of ST2 Nebula worry-free.
1. 1 x ST2 PRO
2. 1 x ST2 PRO USB-C DAC Digital 0.78mm/2Pin Earphone Cable
3. 3 Pairs x Ergonomics Silicone White EarTips
4. 1 x USB-C to USB-A Adapter
5. 1 x HIDIZS Pouch Bag
6. 1 x Warranty Card
7. 1 x Product Quality Certificate
HIDIZS Liquid Silicone Ear Tips are made of high-permeability liquid silicone, designed ergonomically to snugly fit the ear canal. The customized pouch provided by HIDIZS ensures safe storage and prolongs the usage life of ST2 Nebula worry-free.
1. 1 x ST2 PRO
2. 1 x ST2 PRO USB-C DAC Digital 0.78mm/2Pin Earphone Cable
3. 3 Pairs x Ergonomics Silicone White EarTips
4. 1 x USB-C to USB-A Adapter
5. 1 x HIDIZS Pouch Bag
6. 1 x Warranty Card
7. 1 x Product Quality Certificate
High-Perfomace DAC Specificaitons
ES9281AC PRO
ES9281AC PRO
ES9281AC PRO
HyperStream®II QUAD DACTM Architecture
HyperStream®II QUAD DACTM Architecture
HyperStream®II QUAD DACTM Architecture
32-Bit
32-Bit
32-Bit
PCM 32-bit/384KHz
Native DSD 64/128
PCM 32-bit/384KHz
Native DSD 64/128
PCM 32-bit/384KHz
Native DSD 64/128
✅
✅
✅
0.0012%
0.0012%
0.0012%
118dB
118dB
118dB
122 dB
122 dB
122 dB
63dB
63dB
63dB
Up to 70mW+70mW
Up to 70mW+70mW
Up to 70mW+70mW
HiFi Digital Earphones Specificaitons
- White Transparent
- Black Transparent
❎
❎
10mm dual magnetic circuit dynamic driver
❎
❎
Resin + Aluminum alloy etching
❎
❎
0.78mm/2PIN
0.78mm/2PIN
MMCX
✅
✅
✅
✅
✅
✅
20Hz-40kHz
20Hz-40kHz
20Hz-40kHz
108dB
108dB
108dB
32Ω
32Ω
32Ω
about 7 grams (excluding earphone cable)
about 16 grams
about 16 grams
Silver-Gray
Black-Blue
Silver-Gray
Black-Blue
Silver-Gray
Black-Blue
USB-C (Type-C/ USB Type-C)
* Only compatible with iPhone 15 and later models.
* Compatible with 99% USB-C output port devices.
USB-C (Type-C/ USB Type-C)
* Only compatible with iPhone 15 and later models.
* Compatible with 99% USB-C output port devices.
USB-C (Type-C/ USB Type-C)
* Only compatible with iPhone 15 and later models.
* Compatible with 99% USB-C output port devices.
Aluminum Alloy + Transparent Resin
Aluminum Alloy + Transparent Resin
Aluminum Alloy + Transparent Resin
High Purity Oxygen-free Copper
High Purity Oxygen-free Copper
High Purity Oxygen-free Copper
Aluminum Alloy
Aluminum Alloy
Aluminum Alloy
Textile Yarn
Textile Yarn
Textile Yarn
4 Strands 260 Cores
4 Strands 260 Cores
4 Strands 260 Cores
4mm
4mm
4mm
1.2m
1.2m
1.2m
* 1 x ST2 PRO
* 3 Pairs x Ergonomics Silicone White EarTips
* 1 x USB-C to USB-A Adapter
* 1 x HIDIZS Pouch Bag
* 1 x User Manual
* 1 x Warranty Card
* 1 x Product Quality Certificate
* 1 x ST2 PRO USB-C DAC Digital 0.78mm/2Pin Earphone Cable
* 1 x USB-C to USB-A Adapter
* 1 x HIDIZS Pouch Bag
* 1 x User Manual
* 1 x Warranty Card
* 1 x ST2 PRO USB-C DAC Digital MMCX Earphone Cable
* 1 x USB-C to USB-A Adapter
* 1 x HIDIZS Pouch Bag
* 1 x User Manual
* 1 x Warranty Card
FAQ
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Not only our HIDIZS Crew, but all HIDIZS lovers in the server will be more than willing to share their thoughts!
What is HIDIZS ST2 Nebula?
It is The Next Generation USB-C DAC HiFi Digital In-ear Monitors, you also can call it In-ear Earphones. Instead of the traditional headphone jack, the ST2 Nebula has a USB-C connector and also packs in an ESS ES9281AC PRO DAC, which supports high-resolution audio file formats including 32-bit/384KHz PCM, DSD128 and MQA.
If you're looking for the ultimate iPhone 15/ iPhone 16 earphones – or earphones for any other device with a USB-C port – then HIIDZS' new ST2 Nebula HiFi Digital In-ear Earphones may be just what your ears desire on-the-go. They're not just for audiophiles, they're also aimed at gaming lovers for whom every millisecond matters. They could also be useful for creatives such as movie and music makers, too.
What USB-C DAC HiFi Digital In-ear Earphones can do?
The digital wired connection is designed to ensure zero latency, for playing games, watching video, listening to music, phone call listening.
Tired of experiencing the compressed Bluetooth connection with the TWS? Tired of charging up the Bluetooth Wireless Earbuds? Users can easily plug the ST2 Nebula DAC Digital IEMs into any USB Type-C devices with Hi-res detail listening to use anytime, anywhere.
Why HIDIZS ST2 Nebula the perfect partners for your iPhone 15/iPhone 16 and any USB Type-C devices?
With Hi-Res audio support and a built-in high-performance DAC, these in-ears could be a serious audio upgrade for your iPhone 15, iPhone 16, Android phone, Mac, PC, any USB Type-C devices.
This means that they're capable of making the most of the high-quality lossless tracks that you can get from Apple Music, Tidal or Spotify, with detail you're missing out on when you use AirPods Pro 2 and their compressed Bluetooth connection.
What is Hi-Res Audio
Hi-Res Audio stands for High Resolution Audio, representing high-resolution audio quality. The Hi-Res logo, often referred to as the "Little Gold Label," features a black design on a gold background. All Hidizs earphone products have received Hi-Res certification, ensuring that their audio performance meets the Hi-Res specifications set by JEITA (Japan Electronics and Information Technology Industries Association), guaranteeing high-quality audio. As per the JEITA specification, the analog audio frequency response must exceed 40kHz, while the digital audio sampling rate should surpass 96kHz/24 bit.
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