Questyle

Questyle 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

Name: Questyle M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS Flagship DAC, 3.5mm/4.4mm Balanced Output, Supports PCM 768kHz/DSD512 Portable
Brand: Questyle
SKU: B0CK71PX43
Price: 161.14 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-22

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$161.14

As an Amazon Associate, SpecPicks earns from qualifying purchases.

🛒 See live eBay price Also on Amazon — View Current Price → Compare to similar audio & midi

*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.

Bottom line: The Questyle 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 is a specs-and-price decision rather than a crowd-consensus one in the audio & midi category, priced around $161.14. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ Backed by Questyle's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

SpecPicks Verdict

SpecPicks scored Questyle M15i Mobile DAC Amp - MFi Certified Headphone Amplifier,ESS… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the audio & midi category. Questyle's audio & midi lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for audio & midi of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Key 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.

Full Specifications

Brand	Questyle
Color	Black
Theme	High-Fidelity Audio
Impedance	90 Ohms
Model Name	M15i
Style Name	Minimalist
Unit Count	1.0 Count
Form Factor	In Ear
Sensitivity	90 Ohm
Connectivity	USB-C
Control Type	Media Control
Model Number	M15i
Compatibility	Switch, Android, iOS, Mac
Ear Placement	Over Ear
Noise Control	None
Series Number	15
Built-In Media	Cable
Cable Features	Detachable
Control Method	Touch
Earpiece Shape	Rounded Tips

Ready to buy?

Questyle 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 is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

See live eBay listings →

*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.