Portable USB DAC Amps with Dual Outputs for Smartphones/PC/Laptops

Product Description

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1. Set Your Phone
2. Connect M15i
3. Play and Enjoy
4. Indicator

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Would this product be compatible with an iPhone or Android device?

Fully Compatible with Devices & Music Platforms, supporting iOS/mac OS/Android/Windows. Plug and Play, no need for any drivers or settings.

Do I need to buy any cords to go with this?

One USB Type-C cable is included for free in the package box, and Lighting cable is available for purchase from our store.

Does this product work with a microphone?

Sorry, it cannot work with a microphone.

Will this product work with a car's 3.5mm headphone jack?

If you want to use our M15i in your car, you will need to purchase a 3.5mm to 3.5mm OTG cable.

Can this product work with a 250 ohm impedance headphone?

Certainly, our M15i can work with headphones ranging from 8Ω to 600Ω impedance perfectly.

From the brand

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In December 2012, Questyle was founded in Shenzhen, China, focusing on the research and development of high-tech lossless audio products and holding the independent brand of "Questyle". Questyle’s mission is to help users solve technical problems, break free from restricted surroundings, and offer an immersive audio experience in a simple way.

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[Supports high-resolution sound]

The M15i features the highly acclaimed ESS ES9281AC flagship DAC, which can handle up to PCM768kHz/32bit and DSD512. It's almost unimaginable that something as small as the M15 can process and reproduce such demanding audio formats.

[Dual headphone outputs]

The M15i, equipped with four current mode amplification engines, supports 3.5mm single-ended and 4.4mm fully balanced output modes. It 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.

[Full Compatibility for True Lossless Enjoyment]

During 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.

[Without Interruption]

The M15i contains two groundbreaking "current mode" patent amplification SiP modules developed by Questyle Technology. Operating 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. Thanks to the patented current mode amplification, TOREX's efficient power management system, and the M15i’s high performance and low power consumption, the risk of overheating or interruptions during long listening sessions is extremely low.

What You Get: M15i USB DAC Headphone Amp x1, Type-C to Type-C cable x1, Type-C to USB-A Converter x1, user manual x1, our worry-free 12-month warranty, and friendly customer service.

✨✨✨【Note】

When connecting to Lightning interface devices, you can purchase an additional Questyle LTC02 Lightning to Type-C adapter that has been officially certified by Apple MFi.

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