🚀 Enjoy 10% OFF on Your First Order. Use Discount Code: EMIUZEK10

Questyle M15i

Questyle M15i

Product form

1. Desktop Performance, Pocket Mobility The Questyle M15i is the pinnacle of mobile audio engineering. Building on the award-winning legacy... Read more

Next day delivery

$249.00  $246.00 Excl. VAT

    • Guaranteed secure & safe checkout.

      shop pay
    • Shipped today? Order within: Jan 15, 2026 23:59:00 +0800
    • Free shipping on all orders above 50,00
    • No hassle returns, 30 days return
    Pay whenever you want

    Easily pay within 30 days after you have received your package.
    Read more

    Description

    1. Desktop Performance, Pocket Mobility

    The Questyle M15i is the pinnacle of mobile audio engineering. Building on the award-winning legacy of the original M15, the "i" version brings enhanced Apple MFi certification and refined circuitry. By utilizing four total Current Mode Amplification circuits, the M15i provides a level of driving power and sonic transparency that was previously thought impossible for a device powered solely by a smartphone.

    2. Key Features & Reference-Grade Tech

    Four Current Mode Amplification Engines

    • Dual-Engine Architecture: The M15i contains two patented Current Mode Amplification modules per channel (four total). This balanced approach delivers a massive soundstage, lightning-fast transient response, and virtually zero background noise.

    • Pure Analog Texture: Unlike traditional op-amp designs that can sound "digital," Current Mode technology provides a warm, organic, and holographic presentation that honors the original recording.

    Dual Output Options: Balanced & Single-Ended

    • 4.4mm Balanced Output: For those using high-end balanced cables, the 4.4mm port offers maximum power and channel separation.

    • 3.5mm Single-Ended Output: Optimized for standard headphones and IEMs, ensuring high compatibility without sacrificing quality.

    • Manual Gain Switch: A physical hardware switch allows you to toggle between High/Low gain, ensuring the M15i can drive anything from 16Ω In-Ear Monitors to 300Ω studio headphones.

    The Iconic Transparent Aesthetic

    • Visual Engineering: The M15i retains its signature transparent glass cover, revealing the high-end components, gold-plated PCB, and precise soldering within. It is as much a work of art as it is a piece of audio equipment.

    • Apple MFi Certified: Fully certified by Apple, ensuring the M15i handles power management perfectly and supports full bit-perfect playback on iOS devices.

    3. Technical Specifications

    Component Specification
    Amplification 4x Patented Current Mode Modules
    DAC Chip Flagship ESS ES9281AC
    Outputs 4.4mm Balanced / 3.5mm Single-Ended
    Decoding Support PCM 384kHz / DSD256
    THD+N 0.0003% (Reference Level)
    Gain Control Hardware Manual Switch (High/Low)
    Body Material CNC Aluminum + Tempered Glass

    4. Why the M15i is the Audiophile's Choice

    The Questyle M15i (ID for illustrative purposes) is designed for those who own high-end headphones (like Focal, Sennheiser, or HiFiMAN) and want to hear them at their full potential while away from their desk. It provides a "black" background with zero hiss, making it perfect for hyper-sensitive IEMs, yet has the voltage swing to make full-sized headphones sing.

    Specifications

    • Weight: 200gr
    • Usage: Indoor & outdoor

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight
    M15i mobile lossless decoding amp

    M15i

    mobile lossless decoding amp

    M15i Mobile Headphone Amplifier with DAC

    M15i
    Mobile Headphone Amplifier with DAC

    At the CES 2024(Consumer Electronics Show), Questyle launchedthe second generation mobile dongle DAC, the M15i.
    Users value significantly the portability of smart devices nowadaysin the 5G era. As various music apps with a large user base havelaunched lossless audio format libraries, mobile high-resolutionlossless audio has transitioned from a trend to the mainstream. Theenormous size and power consumption of traditional HiFi audioproducts are harder to use with smart devices compared to portableaudio products.
    Questyle's second-generation mobile dongle DAC, the M15i.provides a great example of our tech achievements over the pastdecade.M15i allows audiophiles to enjoy lossless audio fromstreaming platforms anytime, anywhere, works well with traditionalHiFi headphones.lt ensures the best immersive audio experience.

    Apple MFi Certification Ensures High Performance and Compatibility

    Apple MFi Certification Ensures
    High Performance and Compatibility

    "i"in M15i indicates that it has been certified by Apple's MFi
    program. MFi certification ensures perfect compatibility with
    iPhone/iPad and the Apple ecosystem. lt meets Apple's strict
    requirements for external devices in terms of power consumption
    and compatibility, avoiding the risk of damage to phones and
    systems caused by arbitrary connections of USB devices.

    Full Compatibility for True Lossless Enjoyment

    Full Compatibility for True Lossless Enjoyment

    During the development, Questyle Labs conducted extensive
    testing and targeted optimization of M15i's compatibility with
    mainstream smartphones and tablets. Developers managed to
    achieve high compatibility with ioS, HarmonyOS, Android
    versions 5.1,etc. As for Pc, it supports Windows 10 version
    18.3 and above (driver-free) as well as Mac Os systems
    Hence, all Hi-Fi headphone users can enjoy lossless audio on
    streaming platforms anytime, anywhere.

    Equipped with Dual Current Mode Patent Amplification Modules, Ultra-Large Dynamics Capable of Working at High Volume for Extended Periods Without Interruption

    Equipped with Dual Current Mode Patent Amplification Modules, Ultra-Large Dynamics
    Capable of Working at High Volume for Extended Periods Without Interruption

    The M15i contains two groundbreaking "current mode" patent
    amplification SiP modules developed by Questyle Technology. Overall, it
    totals four current mode amplification engines, delivering powerful and
    clear sound. Given that it operates in the current domain, the low
    impedance characteristics of the current-mode circuit result in a
    bandwidth of up to 1MHz and distortion as low as 0.0003%, capturing
    details hidden in the soundtracks.( as an option This development
    makes it possible to discern even a tiny detail when listening to music.)
    As a result, the risk of overheating or interruptions during long listening
    sessions is extremely low thanks to the patented current mode
    amplification, TOREX's efficient power management system, as well as
    the M15i's high-performance and low-power consumption.

    3.5mm and 4.4mm Dual Ports, Manual Gain Adjustment Adaptable to More Headphones and Devices

    3.5mm and 4.4mm Dual Ports, Manual Gain Adjustment
    Adaptable to More Headphones and Devices

    The M15i, equipped with four current mode amplification engines, supports 3.5mm
    single-ended and 4.4mm fully balanced output modes. lt also features manual gain
    adjustment, allowing users to choose the gain mode according to personal
    preferences, headphone characteristics, or the audio system, making it suitable for
    a wide range of apps and devices.

    Ultra-Low Noise Floor, Pure Background,Enjoy Real Sound Anytime, Anywhere
    Supporting Dynamic Sampling Rate Display High Resolution, True Lossless, No Pygmalion Effect.
    Technology Knows No Boundaries ESS Flagship USB DAC Jointly Developed
    Alloy Shell, Transparent Panel Minimalist Display, Elegant and Exquisite

    Alloy Shell, Transparent Panel
    Minimalist Display, Elegant and Exquisite

    Specifications
    In the Box
Accessories for Choosing
    Usage Scenarios of Questyle M15i

    Recently viewed products

      Login

      Forgot your password?

      Don't have an account yet?
      Create account