Questyle M15i Special Edition

Authoritatively Certified​

In 2022, Questyle M15 made a stunning debut; in 2023, M15i returned with global official Apple ecosystem licensing. As a benchmark product embodying the brand's technical essence, the M15 series has not only received enthusiastic global market response over its three-year lifespan but has also won numerous prestigious international awards, including the Japan VGP Gold Prize, Ecoustics Editor's Choice Award, and Headphone Gugu Product of the Year Award, earning high recognition from both the industry and users.

Now, building upon the excellent reputation and market performance of the M15 series worldwide, we have further refined our tuning technology to introduce two new color variants. While inheriting the classic sonic DNA, they achieve a dual evolution in both auditory experience and aesthetics.

 

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M15i Electro Purple​

M15i Electro Purple is the ultimate choice for fans of electronic music, J-pop, and ACG! Leveraging the transient response of the Current Mode Amplifier, it delivers sharp, impactful beats and melodies that transcend dimensions, all while maintaining a neutral sonic foundation. It reproduces the dynamic tension of high-energy soundtracks while preserving the music's authentic texture, offering a portable, immersive rhythmic experience.

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M15i Blues Blue​

M15i Blues Blue is crafted for the atmospheric aesthetics of Jazz and Blues! The refined resolution of the Current Mode Amplifier enhances midrange warmth and the layering of high-frequency harmonics. The smooth tones of saxophones, the rich depth of bass, and the delicate nuances of vocals are meticulously rendered, evoking the ambiance of a late-night jazz club. Its low-power design ensures extended listening enjoyment.
 

Physical Tuning​

Dedicated to Reshaping Authentic Sound Texture and Layering

The M15i Special Edition employs a genuine physical tuning approach. We move beyond simple frequency adjustments via software equalizers, focusing instead on component material selection, structural precision tuning, and long-term system optimization to refine the listening experience at a perceptual level. This tuning enhances subjective qualities like texture, layering, density, and spatial imaging, without altering conventional objective audio measurements.

Electro Purple​

• Color Inspiration from Neon-Lit EDM Parties
• Custom Tuning for EDM & ACG
• Captures Energetic Rhythms and Immersive Depth (Optimized Transient Response)

Blues Blue​

• Color Inspiration from Late-Night Jazz Clubs
• Custom Tuning for Jazz & Blues
• Delivers Warm Soundstages and Live Atmosphere (Optimized Midrange Warmth and High-Frequency Harmonic Detail)

Bauhaus Minimalist Aesthetic, Continued​

Bauhaus minimalist design seamlessly integrates with an aerospace-grade CNC-machined aluminum alloy body. The transparent Kunlun glass window elegantly reveals the precise PCB layout and key signal components. The M15i Special Edition continues this fusion of technology and aesthetics, offering refined craftsmanship and advanced engineering in a sleek, no-frills design where form and function perfectly unite.

 

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Patented Current Mode Amplifier​

High Performance Meets Low Power Consumption
The M15i Special Edition features two of Questyle's groundbreaking patented Current Mode Amplifier SiP modules, housing four amplification engines. Current Mode Amplification technology achieves an impressive 1MHz bandwidth and ultra-low distortion of 0.0003%, accurately reproducing subtle audio details. Paired with an efficient TOREX power management system, it delivers high performance with minimal heat and power draw.

 

ESS Flagship USB DAC Chip ES9281AC​

Unleashing Ultimate Decoding Performance
Questyle × ESS TECHNOLOGYDeveloped in collaboration with ESS's global R&D teams, the M15i Special Edition is equipped with the next-generation ESS flagship USB DAC chip ES9281AC, supporting up to PCM768 and DSD512 decoding. It offers significantly improved audio fidelity and output power over its predecessor.
Maximum Decoding Capability: PCM768 | DSD512

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Apple MFi Certified​

The "i" in M15i denotes Apple MFi certification, ensuring flawless compatibility with iPhone, iPad, and the wider Apple ecosystem. It meets Apple's stringent standards for power efficiency and device safety, eliminating risks associated with uncertified accessories.

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Full Compatibility, Plug & Play​

Extensively tested and optimized, the M15i Special Edition supports:

• iOS
• HarmonyOS
• Android 5.1+
• Windows 10 (1803+) — no drivers required
• macOS

Enjoy effortless, high-quality lossless audio from streaming platforms anywhere.

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Dual Output Ports + Manual Gain Control​

Adapts to Diverse Listening Needs

• 3.5mm single-ended output
• 4.4mm fully balanced output
• Manual gain control for optimal matching with different headphones and listening scenarios

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Dynamic Sample Rate Indicator​

Quickly Identify Audio Format and Quality

• Single red light: PCM ≤48kHz
• Dual red lights: High-sample-rate PCM or DSD audio