HIDIZS ST2 Pro Nebula Review
The $49 ST2 Pro Nebula is a dynamic driver IEM that combines a striking design with integrated DSP and amplification aimed at entry-level or budget portable audio enthusiasts.
Features
The HIDIZS ST2 Pro Nebula features a 10mm dual magnetic circuit dynamic driver designed to deliver precise and natural sound. Its PU+PEEK composite diaphragm is both lightweight and durable, ensuring consistent and detailed audio reproduction.This structure also helps reduce distortion and enhance the overall sound quality.
HIDIZS has tuned the ST2 Pro Nebula with the Harman 2019 curve, ensuring a musical and enjoyable listening experience. The tuning highlights the driver’s capabilities, bringing out a bassier presentation.
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Stock Cable
The HIDIZS ST2 Pro Nebula’s stock cable features an ESS ES9281AC PRO DAC chip built directly into the USB-C connector, delivering high-quality audio decoding. Its transparent housing showcases the circuit topology and gives it a premium touch to the design.
For versatility, HIDIZS offers 2-pin 0.78mm and MMCX connector options of which I have the 2-pin version here for review. The MMCX version, sold separately, includes the same ESS DAC chip, extending its capabilities to MMCX-compatible IEMs.
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Sound Impressions
Bass: The HIDIZS ST2 Pro Nebula’s bass performance is clearly geared toward bassheads, offering an abundance of sub-bass and mid-bass. The rumble and slam are particularly satisfying, adding liveliness to its sound.
Mids: The HIDIZS ST2 Pro Nebula midrange provides a clean presentation, but the vocals are recessed. This allows the bass to dominate, pushing vocals to the background rather than making them the center of attention.
Treble: The HIDIZS ST2 Pro Nebula’s treble offers above-average detail retrieval, ensuring fine elements in tracks are noticeable. Its energetic nature gives the highs a lively presence that adds brightness to the overall sound.
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My Verdict
The HIDIZS ST2 Pro Nebula offers a powerful and engaging listening experience, with bass that stands out for its punch and rumble.
Its natural timbre, bright treble, and cohesive presentation make it a good choice for listeners who enjoy energetic and impactful sound signatures.
With its built-in ESS DAC, seamless compatibility, and efficient performance across devices, the ST2 Pro Nebula provides convenience and versatility for first-time upgraders.
HIDIZS ST2 Pro Nebula Technical Specifications
Driver Type: One (1x) dual-magnetic dynamic driver
Plug: USB-C DSP with ES9281AC Pro chip (either 0.78mm or MMCX terminations)
Frequency Response: 20Hz – 40kHz
Impedance: 32Ω
Sensitivity: 108 dB/Vrms
BUY NOW: HIDIZS ST2 PRO Nebula
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