MOONDROP x 'Girls' Frontline 2' Collab: ANC True Wireless Planar Magnetic Earphones 'H.I.D.E.404 Klukai' to be Released on April 23
MOONDROP releases 'H.I.D.E.404 Klukai', a limited-edition TWS earphone featuring planar magnetic drivers, ANC, and LDAC, in collaboration with the RPG 'Girls' Frontline 2', launching April 23.
📋 Article Processing Timeline
- 📰 Published: April 23, 2026 at 20:00
- 🔍 Collected: April 23, 2026 at 11:31
- 🤖 AI Analyzed: April 23, 2026 at 13:46 (2h 14m after Collected)
MOONDROP Co., Ltd. will begin sales of the 'H.I.D.E.404 Klukai', an active noise-canceling (ANC) true wireless planar magnetic earphone, in collaboration with the popular tactical doll simulation RPG 'Girls' Frontline 2: Exilium', starting Thursday, April 23, 2026.
The 'H.I.D.E.404 Klukai' is a true wireless earphone styled after the elite doll 'Klukai' appearing in 'Girls' Frontline 2: Exilium'. Inheriting the flagship-grade patented ultra-high linearity planar magnetic driver technology developed in the 'Yume-kai' series, it is equipped with Bluetooth 6.0, LDAC high-resolution transmission, an NPU core-integrated AI ENC, a 55ms low latency gaming mode, and exclusive Japanese voice guidance by Klukai. It is a limited-quantity model balancing uncompromising HiFi audio quality with a special collaborative experience.
■ Exclusive Klukai Design - Artwork Condensing the Worldview
- Collaboration-exclusive color and limited pattern design
- Generous bundle of collaboration-limited merchandise
- Equipped with Klukai's exclusive Japanese voice guidance
- Collaboration limited bonus: Klukai animated icon frame
■ Main Features
Ultra HiFi Sound Quality
Inheriting Flagship-Grade Patented Planar Magnetic Driver Technology
Equipped with a Patented 13mm Ring-type Single-Sided Drive Planar Magnetic Driver
The 'H.I.D.E.404 Klukai' utilizes a patented 13mm ring-type single-sided drive planar magnetic driver. This driver inherits the flagship-level ultra-high linearity technology cultivated in the 'Yume-kai' series. Engineered with a unique dual surround + planar magnetic circuit structure, it maintains excellent wide-range reproduction and low distortion while improving production efficiency to deliver it to more users.
The magnetic circuit of the 13mm ring-type driver consists of two N55 neodymium magnets and an ultra-fine CCAW voice coil. Compared to common dynamic drivers, it achieves higher conversion efficiency, extremely low distortion, and smooth high-frequency extension.
Achieving Total Harmonic Distortion (THD) of Less Than 0.05%
Through sound quality optimization by the DSP built into the next-gen TWS SoC chip and meticulous tuning by MOONDROP's acoustic team, it achieves a frequency response compliant with '5128-popAvg-DF (JM-1)'.
Across the entire acoustic pathway—from wireless transmission to chip decoding and final playback—total harmonic distortion (THD) across all frequency bands achieved an outstanding figure of less than 0.05%.
Even with a full-range planar magnetic driver, users can genuinely experience HiFi-level sound quality.
Support for High-Quality Audio Codec 'LDAC'
To provide high-resolution music playback rivaling wired HiFi earphones, it supports the high-quality audio codec 'LDAC'. Capable of transmitting 24bit/96kHz Hi-Res audio at a maximum bitrate of 990kbps, the 'H.I.D.E.404 Klukai' impeccably reproduces dynamic range and wideband details.
More Comfortable Lossless High-Fidelity Noise Canceling
Effective Bandwidth of Noise Reduction Improved by 36%
While many commercial products employ hybrid ANC that affects sound quality, the 'H.I.D.E.404 Klukai' eliminates feedback-type ANC and exclusively uses the more difficult-to-tune feedforward method. By combining the latest high-performance SoC chip with a highly efficient patented planar unit, it minimizes the impact on sound quality while achieving a noise reduction effect close to dual-feed systems.
Moving beyond the traditional manufacturer goal of 'maximum isolation volume', it prioritizes 'real-world isolation coverage' and 'comfort with low ear pressure', delivering wide-band, comfortable active noise canceling.
Built-in NPU Core
Hardware-Level AI ENC
The 'H.I.D.E.404 Klukai' is equipped with the latest chip featuring a built-in NPU (Neural Processing Unit) core. It utilizes an AI noise-canceling algorithm modeled and trained via deep learning. Compared to conventional ENC (Environmental Noise Cancellation) technologies, it effectively removes background noise while capturing human voices more distinctly, ensuring clear calls even in noisy environments.
55ms Low Latency Gaming Mode
Music/Game Dual Mode
Users can switch between two connection modes. In addition to 'Music Mode' suitable for high-bitrate music playback, tapping the touch sensor four times activates the gaming mode.
The 'H.I.D.E.404 Klukai' is a true wireless earphone styled after the elite doll 'Klukai' appearing in 'Girls' Frontline 2: Exilium'. Inheriting the flagship-grade patented ultra-high linearity planar magnetic driver technology developed in the 'Yume-kai' series, it is equipped with Bluetooth 6.0, LDAC high-resolution transmission, an NPU core-integrated AI ENC, a 55ms low latency gaming mode, and exclusive Japanese voice guidance by Klukai. It is a limited-quantity model balancing uncompromising HiFi audio quality with a special collaborative experience.
■ Exclusive Klukai Design - Artwork Condensing the Worldview
- Collaboration-exclusive color and limited pattern design
- Generous bundle of collaboration-limited merchandise
- Equipped with Klukai's exclusive Japanese voice guidance
- Collaboration limited bonus: Klukai animated icon frame
■ Main Features
Ultra HiFi Sound Quality
Inheriting Flagship-Grade Patented Planar Magnetic Driver Technology
Equipped with a Patented 13mm Ring-type Single-Sided Drive Planar Magnetic Driver
The 'H.I.D.E.404 Klukai' utilizes a patented 13mm ring-type single-sided drive planar magnetic driver. This driver inherits the flagship-level ultra-high linearity technology cultivated in the 'Yume-kai' series. Engineered with a unique dual surround + planar magnetic circuit structure, it maintains excellent wide-range reproduction and low distortion while improving production efficiency to deliver it to more users.
The magnetic circuit of the 13mm ring-type driver consists of two N55 neodymium magnets and an ultra-fine CCAW voice coil. Compared to common dynamic drivers, it achieves higher conversion efficiency, extremely low distortion, and smooth high-frequency extension.
Achieving Total Harmonic Distortion (THD) of Less Than 0.05%
Through sound quality optimization by the DSP built into the next-gen TWS SoC chip and meticulous tuning by MOONDROP's acoustic team, it achieves a frequency response compliant with '5128-popAvg-DF (JM-1)'.
Across the entire acoustic pathway—from wireless transmission to chip decoding and final playback—total harmonic distortion (THD) across all frequency bands achieved an outstanding figure of less than 0.05%.
Even with a full-range planar magnetic driver, users can genuinely experience HiFi-level sound quality.
Support for High-Quality Audio Codec 'LDAC'
To provide high-resolution music playback rivaling wired HiFi earphones, it supports the high-quality audio codec 'LDAC'. Capable of transmitting 24bit/96kHz Hi-Res audio at a maximum bitrate of 990kbps, the 'H.I.D.E.404 Klukai' impeccably reproduces dynamic range and wideband details.
More Comfortable Lossless High-Fidelity Noise Canceling
Effective Bandwidth of Noise Reduction Improved by 36%
While many commercial products employ hybrid ANC that affects sound quality, the 'H.I.D.E.404 Klukai' eliminates feedback-type ANC and exclusively uses the more difficult-to-tune feedforward method. By combining the latest high-performance SoC chip with a highly efficient patented planar unit, it minimizes the impact on sound quality while achieving a noise reduction effect close to dual-feed systems.
Moving beyond the traditional manufacturer goal of 'maximum isolation volume', it prioritizes 'real-world isolation coverage' and 'comfort with low ear pressure', delivering wide-band, comfortable active noise canceling.
Built-in NPU Core
Hardware-Level AI ENC
The 'H.I.D.E.404 Klukai' is equipped with the latest chip featuring a built-in NPU (Neural Processing Unit) core. It utilizes an AI noise-canceling algorithm modeled and trained via deep learning. Compared to conventional ENC (Environmental Noise Cancellation) technologies, it effectively removes background noise while capturing human voices more distinctly, ensuring clear calls even in noisy environments.
55ms Low Latency Gaming Mode
Music/Game Dual Mode
Users can switch between two connection modes. In addition to 'Music Mode' suitable for high-bitrate music playback, tapping the touch sensor four times activates the gaming mode.