Questyle M15i Portable DAC & Headphone Amplifier
QUESTYLE
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Questyle M15i Portable DAC & Headphone Amplifier
QUESTYLE
Description / Questyle M15i Portable DAC & Headphone Amplifier
M15i Mobile Headphone Amplifier with DAC
The M15i, Questyle's second-generation mobile dongle DAC, provides a great example Questyle's tech aachievements over the past decade. The M15i allows audiophiles to enjoy lossless audio from streaming platforms anytime, anywhere, and works with traditional HiFi headphones, ensuring the best immersive audio experience.
Apple MFi Certified for Guaranteed Performance and Compatibility
The “i” in M15i indicates that it has been certified by Apple MFi. MFi certification ensures perfect support for iPhone/iPad and seamless integration into the Apple ecosystem. It complies with Apple’s stringent requirements for external devices in terms of power consumption and compatibility, avoiding the risk of damage to phones and systems from arbitrary USB device pairings.
SiP Current Mode
The M15i contains two groundbreaking "current mode" patent amplification SiP modules developed by Questyle Technology. Four current mode amplification engines deliver a powerful and clear sound. The low impedance characteristics of the current mode circuit result in a bandwidth of up to 1 MHz and distortion levels as low as 0.0003. Only a low enough noise floor can capture the details in a soundtrack, and this lower noise floor contributes to a higher resolution.
3.5mm and 4.4mm Dual Ports
The M15i supports 3.5mm single-ended and 4.4mm fully balanced output modes. It also features a manual gain adjustment switch, allowing users to choose the gain according to personal preferences, headphone characteristics, or the audio system, making it compatible with a wide range of devices.
ESS Flagship USB DAC Jointly Developed
The M12i features the updated ESS flagship USB DAC chip, ES9281AC, supporting a maximum PCM768 and DSD512 D/A converting capability (M12 supports a maximum of PCM384 and DSD256). Audio distortion performance and output power have been upgraded relative to the previous generation.
Full Compatibility for True Lossless Enjoyment
During development, Questyle Labs conducted extensive testing and targeted optimization for M15i’s compatibility with mainstream smartphones and tablets. It managed to achieve high compatibility with iOS, HarmonyOS, and Android versions 5.1 and above. As for PC, the M12i supports Windows version 18.3 and above (driver-free) and Mac OS.
Product Inclusions
- M15i
- USB C to C Cable
- USB C to A Cable
- Warranty Card
- User Manual
Specifications
| Compatible Operating Systems |
Android 5.0 and above Windows 10 version 18.3 and above iOS Mac OS |
| D/A Converting Capability |
PCM: 44.1kHz - 768kHz (16/24/32Bit) DSD: DSD64 (1Bit 2.8MHz), DSD128 (1Bit 5.6Mhz), DSD256 (1Bit 11.2Mhz), DSD512 (1Bit 22.4Mhz) |
| Output Interfaces |
3.5mm single-ended headphone jack 4.4mm balanced headphone jack |
| Output Power | 3.5mm: RL=300Ω,Po=11.97mW, Vout(Max)=1.895Vrms, THD+N=0.00033% 4.4mm: RL=300Ω,Po=22.60mW, Vout(Max)=2.624Vrms, THD+N=0.00033% |
| Frequency Response | ±0.1dB(20Hz-20kHz); ±22dB(20Hz - 880kHz) |
| THD+N | 0.0003% |
| DAC | ESS Flagship USB DAC ES9281AC |
| Exterior Material | CNC Anodized Black Aluminum Alloy |
| Dimensions | 61.99[L] X 27.99[W] X 12[D](mm) |