M15i Headphone Amplifier: Portable USB DAC Amps, MFi Certified

Brand Introduction

Established in Shenzhen, China, in December 2012, Questyle is committed to pioneering high-tech lossless audio solutions under its independent brand, "Questyle". Our mission is clear: to empower users by resolving technical constraints and providing an immersive audio journey with simplicity.

Cutting-edge Features

The M15i boasts the acclaimed ESS ES9281AC flagship DAC, capable of handling PCM768kHz/32bit and DSD512, setting a new standard for portable audio devices. Despite its compact size, the M15i effortlessly processes these demanding audio formats, delivering unparalleled fidelity.

Versatile Output Options

Equipped with four current mode amplification engines, the M15i supports both 3.5mm single-ended and 4.4mm fully balanced output modes. Manual gain adjustment allows users to tailor the experience to their preferences, headphone specifications, or audio systems, ensuring compatibility across a broad spectrum of applications and devices.

Seamless Compatibility

Extensively tested and optimized for compatibility, the M15i seamlessly integrates with mainstream smartphones and tablets. From iOS and HarmonyOS to Android versions 5.1 and beyond, as well as Windows 10 (18.3 and above) and Mac OS systems, the M15i ensures true lossless enjoyment for all Hi-Fi enthusiasts, anytime, anywhere.

Uninterrupted Listening Experience

The M15i incorporates two revolutionary "current mode" patent amplification SiP modules, developed by Questyle Technology. Operating in the current domain, these modules offer a bandwidth of up to 1MHz and minimal distortion (0.0003%), unveiling hidden nuances within soundtracks. With the patented current mode amplification, TOREX’s efficient power management system, and superior performance, the M15i minimizes the risk of overheating or interruptions during prolonged listening sessions.

What's Included

With your purchase, you'll receive the M15i USB DAC Headphone Amp, along with a Type-C to Type-C cable, Type-C to USB-A Converter, user manual, worry-free 12-month warranty, and dedicated customer service.

Please Note

For Lightning interface devices, consider our officially certified Questyle LTC02 Lightning to Type-C adapter, endorsed by Apple MFi, for seamless connectivity.

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