2-in-1 Hi-Res Audio Solution

Experience a portable DAC and in-ear monitors in one compact, 2-in-1 package. The ST2 PRO Nebula pairs a high-performance ES9218AC Pro ESS DAC chip with USB-C Hi-Res digital earphones, unlocking every nuance of your music.

High-Performance DAC & DSP Technology

At its core sits the ES9218AC Pro ESS DAC chip with advanced DSP processing. It supports PCM 32-bit/384 kHz, Native DSD 64/128 and Hi-Res/MQA streaming formats, all delivered with zero-latency audio and broad device compatibility.

USB-C Hi-Res Digital In-Ear Monitors

Featuring 10 mm dual magnetic circuit dynamic drivers, these earphones offer a balanced, natural sound signature. The detachable USB-C DSP cable uses a 0.78 mm 2-pin/MMCX connector and high-purity oxygen-free copper wiring, while in-line controls and an HD microphone ensure crystal-clear communication.

Powerful Performance Specs

With an output power of 70 mW + 70 mW at 32 Ω, ultra-low distortion of 0.0012 %, a signal-to-noise ratio of 118 dB, a dynamic range of 122 dB and a minimum working voltage of just 2 V, the ST2 PRO Nebula delivers truly impactful audio across all genres.

Ergonomic Comfort Shell

The custom-fit shell is crafted from German-imported Byer resin using a single-molding process. Its skin-friendly, durable design provides passive noise reduction and lasting comfort, making it ideal for extended listening sessions.

Professional Acoustic Tuning

Calibrated by the HIDIZS Acoustic Laboratory to the H-2019 target curve, the ST2 PRO Nebula delivers tight bass, rich midrange and a smooth high-frequency extension for a genuinely Hi-Res listening experience.

Technical Details

Model Name
ST2 PRO Nebula
Manufacturer
HIDIZS
Package Dimensions
11.3 × 10.3 × 3.7 cm (4.45 × 4.06 × 1.46 in)
Item Weight
119 g (4.2 oz)
Noise Control
Passive Sound Isolation
Frequency Range
20 Hz – 40 kHz
Sensitivity
118 dB SPL (±3 dB)
Driver Type
Dynamic
Driver Size
10 mm
Chip Model
ES9281AC PRO
Chip Architecture
HyperStream® | QUAD DACTM Architecture
PCM Support
up to 32-bit/384 kHz
MQA Decoding
supported
Native DSD
64 and 128
THD+N
0.000012
Connector
USB-C headphone jack
Compatible Devices
PC, Tablet, Smartphone, DAC, DAP
Connection
Wired
Controls
In-line volume control & HD microphone
Cable
Detachable USB-C DSP (0.78 mm 2-pin/MMCX)
Housing
Resin, Plastic
Inside the Box
  • 1 x ST2 PRO
  • 1 x ST2 PRO USB-C DAC Digital 0.78mm/2Pin Earphone Cable
  • 3 Pairs x Ergonomics Silicone White EarTips
  • 1 x USB-C to USB-A Adapter
  • 1 x HIDIZS Pouch Bag
  • 1 x Warranty Card
  • 1 x Product Quality Certificate

30-Day Return Policy

You may return any non-customized product that is still factory sealed, within 30 days upon receiving it. For items that are damaged, incorrect, or faulty upon delivery, Linsoul will assess the issue and provide a solution accordingly.

1 Year Warranty

The HIDIZS ST2 PRO Nebula Comes with a 1 year warranty on the In-Ear Monitors and 3 month warranty on the cable.

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