---
product_id: 612568007
title: "- M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop"
brand: "questyle"
price: "1409.17 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Questyle"
url: https://www.desertcart.tn/products/612568007-m15i-mobile-dac-amp-mfi-certified-headphone-amplifier-ess-flagship
store_origin: TN
region: Tunisia
---

# Supports PCM 768kHz/DSD512 Ultra-low distortion 0.0003% Dual 4.4mm balanced & 3.5mm outputs - M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop

**Brand:** questyle
**Price:** 1409.17 DT
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate Every Beat — Your Portable Audiophile Powerhouse

## Quick Answers

- **What is this?** - M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop by questyle
- **How much does it cost?** 1409.17 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/612568007-m15i-mobile-dac-amp-mfi-certified-headphone-amplifier-ess-flagship)

## Best For

- questyle enthusiasts

## Why This Product

- Trusted questyle brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Portable Powerhouse:** Compact, lightweight design with manual gain control ensures premium sound on-the-go without compromise.
- • **Dual Balanced Outputs:** Switch effortlessly between 4.4mm balanced and 3.5mm single-ended outputs for ultimate headphone flexibility.
- • **Flagship ESS DAC Inside:** Powered by ESS ES9281AC, enjoy high-res audio up to PCM 768kHz/32bit and DSD512 for studio-quality sound.
- • **Audiophile-Grade Clarity:** Experience pristine sound with patented CMA tech delivering ultra-low distortion and wide impedance range (8-600Ω).
- • **Universal Device Compatibility:** Seamlessly connect with iOS, Android 5.1+, Harmony OS, Windows 10+, and more for lossless audio anywhere.

## Overview

The Questyle M15i is a portable, MFi-certified USB-C DAC headphone amplifier featuring patented Current Mode Amplifier technology for ultra-low distortion and wide impedance support. It offers dual 4.4mm balanced and 3.5mm outputs, supports high-resolution audio formats up to PCM 768kHz/32bit and DSD512, and is compatible with a broad range of devices including iOS, Android, Harmony OS, and Windows. Designed for audiophiles seeking premium sound quality on the go, it includes manual gain adjustment and comes with essential cables and customer support.

## Description

Product description Would this be compatible with iPhone or Android device? Fullly Compatible with Devices & Music Platforms, support ios/mac OS/Android/Windows.Plug and Play, no need any driver or setting. Would this be compatible with iPhone or Android device? Fullly Compatible with Devices & Music Platforms, support ios/mac OS/Android/Windows.Plug and Play, no need any driver or setting. What should you do if the M15i suddenly stops working? If your M15i suddenly stops working, it may be because the firmware is missing. You can download the firmware to update the M15i. What should you do if the M15i suddenly stops working? If your M15i suddenly stops working, it may be because the firmware is missing. You can download the firmware to update the M15i. Does this product work with micphone? Sorry, it can't work with micphone. Does this product work with micphone? Sorry, it can't work with micphone. Does this product work for a car's 3.5mm headphone jack? If you want to use our M15i in your car,you need to buy a 3.5mm to 3.5mm OTG cables. Does this product work for a car's 3.5mm headphone jack? If you want to use our M15i in your car,you need to buy a 3.5mm to 3.5mm OTG cables. Does this product work with 250 ohm impedence headphone? Of course it dose,our M15i can work with 8Ω-600Ω impedence headphone perfectly. Does this product work with 250 ohm impedence headphone? Of course it dose,our M15i can work with 8Ω-600Ω impedence headphone perfectly. Questyle Headphone Amplifier High Resolution Portable USB DAC Amps M15i Headphone DAC Amp M15C Headphone DAC Amp M12i Headphone DAC Amp M18i Bluetooth DAC Amp

Review: It soothed my ears until it broke my heart - I loved this dongle amp/dac. It has a very clean and neutral presentation and I've driven a 64 Audio U4s IEM, a closed-back Focal Stellia, and an open-back Focal Utopia with this little thing. No problem with any of these and it's particularly good from it's balanced 4.4mm output. I'd also like to note that Questyle's usb-c to Lightning cable (unfortunately it needs to be purchased seperately) is one of only two brands of "short" dongle cables that I have not had issue with (even the high-end cable can exhibit too much wiggle in the Lightning port, causing the dac/amp to disconnect). However, I did have a problem. The M15i died on the 6th day. It simply would not connect or power on. Note that it was not due to a bad cable; I tried several others and none worked. That said, I love this dac/amp so much that rather than return for a refund, I requested a replacement. I'm hoping I will be able to return with a positive update, but for now I have to give this a low rating. UPDATE: The M15i mysteriously came back to life. Not sure if it suffered thermal shutdown (note that the case was cool when it died the previous day). Currently sounds great, but I'm still going to return this one when the replacement arrives as I fear this may happen again. Do note that I'm still going for a replacement rather than a refund because I love it that much. 2nd UPDATE: Replacement M15i arrived and it has been stable. Customer support was good, although replacement took longer than expected to arrive. I guess replacements do not qualify for Prime shipping; I should have returned for a refund and then bought a new one (that would still qualify for 2-day Prime shipping). Despite having run into a shutdown issue on the first unit, this is still currently my favorite dongle dac/amp. It gives me the mobility I want while using some high-end IEMs.
Review: Incredible Sound - This thing sounds fantastic. I am using it with $900 Sure SE846 headphones. I haven't listened to any other dongle DACs so I don't have much for comparison, but compared to other audio equipment I've listened to over the years, this thing is precise and musical. It has a lively sound, playing FLACs from my iPhone via Doppler app. Just sitting and listening to music, doing nothing else, is very enjoyable now. The device seems to work best with Apple devices. I tried using it with my Windows desktop PC, but the sound was not nearly as good. I have no idea why. I won't bore you with a subjective description of the sound, just know it may be hit or miss with Windows. I haven't tried it with Linux yet. Fortunately I only need it for use with my Macbook Air and iPhone, but more compatibility is always good. The only improvement I could suggest to the manufacturer would be a small volume dial. From what I have heard while cruising the internet, software volume control causes a reduction of the sound quality. I have no idea if this is true, but supposing it is, it could be avoided with a volume dial. The sound and detail on this device is great so it may be beyond my ability to hear. If you're considering this device, just get it. I almost got a DAP instead of this DAC, but I'm glad I got this. While it does limit the compactness of the phone, I think it is better than fiddling with a crappy version of Android on one of the many DAPs out there. Until a new version of the iPod is released, I think this is the way to go. You probably have better battery on your phone with this plugged in than you would with many of the DAPs running Android anyway. I'm just a guy yapping, make your own choices. But know that this thing definitely has brought me happiness and I hope you enjoy it, too.

## Features

- [Widely Compatibility] ：Workable well with computers, Smartphones, and Laptops.High compatibility with iOS, Harmony OS, Android versions 5.1+ and Windows 10+ version, enables you enjoy your lossless Music with your preferred device anytime, anywhere.[Important] If there is a device incompatibility issue, please contact us and we can resolve it for you.Any problems with the M15i,we will try our best to help you.
- [Patented Current Mode Amplification] – Desktop-Level Performance in Your Pocket Experience the signature Questyle sound with our patented Current Mode Amplification. Unlike traditional voltage amps, the M15i offers ultra-low distortion and high-speed transient response, delivering a natural, warm, and high-fidelity sound that brings your lossless music to life.
- [Dual Output: 3.5mm & 4.4mm Balanced] – Drive Any Headphone with Ease Featuring both 3.5mm single-ended and 4.4mm balanced outputs, the M15i is designed for versatility. With a manual Gain Adjustment switch, it can delicately drive sensitive In-Ear Monitors (IEMs) without background hiss, or provide massive power to drive demanding full-sized headphones.
- [Flagship ESS DAC & Hi-Res Support] – Pure Audiophile Grade Decoding Equipped with the flagship ESS ES9281AC DAC chip, the M15i supports hardware decoding for PCM up to 768kHz/32Bit and DSD512. Whether you are streaming from Tidal, Qobuz, or Apple Music, you’ll hear every micro-detail and subtle nuance of the original recording.
- [Official MFi Certified] – Seamless Compatibility for iPhone 17/16 & More Enjoy peace of mind with MFi Certification. The M15i ensures 100% compatibility and stable connection with the latest iPhone 17/16 series, iPad, Mac, and Android devices. Plug-and-play performance without the battery drain or "device not supported" errors found in non-certified adapters.
- [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, and friendly customer service.If you have any questions, please contact us and we will solve them for you.
- 【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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CK71PX43 |
| Additional Features | Lightweight |
| Age Range Description | Adult |
| Antenna Location | Music, Gaming, Calling |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #34,181 in Electronics ( See Top 100 in Electronics ) #58 in Headphone Amps |
| Brand | Questyle |
| Brand Name | Questyle |
| Built-In Media | Cable |
| Cable Features | Detachable |
| Carrying Case Color | Black |
| Color | Black |
| Compatible Devices | Smartphones, Tablets, PCs, Laptops |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Control Type | Media Control |
| Controller Type | Wired |
| Customer Package Type | FFP |
| Customer Reviews | 4.0 out of 5 stars 138 Reviews |
| Ear Placement | Over Ear |
| Earpiece Shape | Rounded Tips |
| Enclosure Material | Metal |
| Form Factor | In Ear |
| Frequency Range | 20 Hz - 20,000 Hz |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | Over Ear |
| Impedance | 90 Ohms |
| Is Autographed | No |
| Item Weight | 0.1 Kilograms |
| Manufacturer | Questyle |
| Model Name | M15i |
| Model Number | M15i |
| Noise Control | None |
| Number of Items | 1 |
| Number of Power Levels | 2 |
| Sensitivity | 90 Ohm |
| Series Number | 15 |
| Specific Uses For Product | High-fidelity audio playback |
| Style Name | Minimalist |
| Theme | High-Fidelity Audio |
| UPC | 799194388246 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year warranty |
| Wireless Technology | RF |

## Product Details

- **Brand:** Questyle
- **Color:** Black
- **Ear Placement:** Over Ear
- **Form Factor:** In Ear
- **Impedance:** 90 Ohms

## Images

![- M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop - Image 1](https://m.media-amazon.com/images/I/61qWsqUbwNL.jpg)
![- M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop - Image 2](https://m.media-amazon.com/images/I/81g-tb7JPKL.jpg)
![- M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop - Image 3](https://m.media-amazon.com/images/I/91JUiH3PVBL.jpg)
![- M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop - Image 4](https://m.media-amazon.com/images/I/71JLdrVmRyL.jpg)
![- M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable USB C Audio Adapter for iPhone, Android, Laptop - Image 5](https://m.media-amazon.com/images/I/71HKbM2ttsL.jpg)

## Questions & Answers

**Q: Would this be compatible with iPhone or Android device?**
A: Fullly Compatible with Devices & Music Platforms, support ios/mac OS/Android/Windows.Plug and Play, no need any driver or setting.

**Q: What should you do if the M15i suddenly stops working?**
A: If your M15i suddenly stops working, it may be because the firmware is missing. You can download the firmware to update the M15i.

**Q: Does this product work with micphone?**
A: Sorry, it can't work with micphone.

**Q: Does this product work for a car's 3.5mm headphone jack?**
A: If you want to use our M15i in your car,you need to buy a 3.5mm to 3.5mm OTG cables.

**Q: Does this product work with 250 ohm impedence headphone?**
A: Of course it dose,our M15i can work with 8Ω-600Ω impedence headphone perfectly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It soothed my ears until it broke my heart
*by G***G on May 4, 2024*

I loved this dongle amp/dac. It has a very clean and neutral presentation and I've driven a 64 Audio U4s IEM, a closed-back Focal Stellia, and an open-back Focal Utopia with this little thing. No problem with any of these and it's particularly good from it's balanced 4.4mm output. I'd also like to note that Questyle's usb-c to Lightning cable (unfortunately it needs to be purchased seperately) is one of only two brands of "short" dongle cables that I have not had issue with (even the high-end cable can exhibit too much wiggle in the Lightning port, causing the dac/amp to disconnect). However, I did have a problem. The M15i died on the 6th day. It simply would not connect or power on. Note that it was not due to a bad cable; I tried several others and none worked. That said, I love this dac/amp so much that rather than return for a refund, I requested a replacement. I'm hoping I will be able to return with a positive update, but for now I have to give this a low rating. UPDATE: The M15i mysteriously came back to life. Not sure if it suffered thermal shutdown (note that the case was cool when it died the previous day). Currently sounds great, but I'm still going to return this one when the replacement arrives as I fear this may happen again. Do note that I'm still going for a replacement rather than a refund because I love it that much. 2nd UPDATE: Replacement M15i arrived and it has been stable. Customer support was good, although replacement took longer than expected to arrive. I guess replacements do not qualify for Prime shipping; I should have returned for a refund and then bought a new one (that would still qualify for 2-day Prime shipping). Despite having run into a shutdown issue on the first unit, this is still currently my favorite dongle dac/amp. It gives me the mobility I want while using some high-end IEMs.

### ⭐⭐⭐⭐⭐ Incredible Sound
*by D***E on November 24, 2024*

This thing sounds fantastic. I am using it with $900 Sure SE846 headphones. I haven't listened to any other dongle DACs so I don't have much for comparison, but compared to other audio equipment I've listened to over the years, this thing is precise and musical. It has a lively sound, playing FLACs from my iPhone via Doppler app. Just sitting and listening to music, doing nothing else, is very enjoyable now. The device seems to work best with Apple devices. I tried using it with my Windows desktop PC, but the sound was not nearly as good. I have no idea why. I won't bore you with a subjective description of the sound, just know it may be hit or miss with Windows. I haven't tried it with Linux yet. Fortunately I only need it for use with my Macbook Air and iPhone, but more compatibility is always good. The only improvement I could suggest to the manufacturer would be a small volume dial. From what I have heard while cruising the internet, software volume control causes a reduction of the sound quality. I have no idea if this is true, but supposing it is, it could be avoided with a volume dial. The sound and detail on this device is great so it may be beyond my ability to hear. If you're considering this device, just get it. I almost got a DAP instead of this DAC, but I'm glad I got this. While it does limit the compactness of the phone, I think it is better than fiddling with a crappy version of Android on one of the many DAPs out there. Until a new version of the iPod is released, I think this is the way to go. You probably have better battery on your phone with this plugged in than you would with many of the DAPs running Android anyway. I'm just a guy yapping, make your own choices. But know that this thing definitely has brought me happiness and I hope you enjoy it, too.

### ⭐⭐⭐⭐⭐ Sound Quality of Something Much Bigger
*by R***D on October 8, 2024*

My current headphone setup is about $5,500 without including headphones. A Holo Bliss KTE, a Holo Cyan 2, and a Holo Red Streamer. As far as sound quality goes, this tiny $250 thing is punching closer than it should to my big setup. It doesn't have as much power obviously, and doesn't sound as big, but it's still very impressive. I have only used 4.4 balanced with this dongle because using 3.5 dramatically reduces output. So, using 4.4 balanced, I've tried Hifiman HE1000SE, Sennheiser HD600, and ZMF Bokeh. It's not ideal for high impedance like HD600 @ 300 ohm. But it is acceptable performance for 300 ohms and would probably satisfy most people. It drives the HE1000SE and Bokeh very well. There were moments where I just shook my head and felt a bit silly, because sure my $5,500 setup sounds twice as good as this $250 dongle. But at 22 times the price. That should impress even the most skeptical listeners. Also, it's portable! This thing is a clear winner and an incredible value.

## Frequently Bought Together

- Questyle M15i Headphone Amplifier [MFi Certified] Portable USB DAC Amps with 4.4mm and 3.5mm Dual Outputs Supports PCM 768kHz/DSD512 High Resolution Lossless for Smartphones/PC/Laptops
- Questyle USB C DAC OTG Cable 1.2m,4ft Audio Adapter for iPhone 13/12/11/X/8/7/6/Plus, iPad Pro/Air/Mini, iOS15 to Type C Male Adaptor(Only fit for Amplifier M12i M15i)
- M15i Headphone Amps USB DAC Case

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-31*