Questyle M15i

Technology Without Boundaries

The M15i uses the updated ESS flagship USB DAC chip ES9281AC, supporting D/A converting up to PCM768 and DSD512 (1st Gen M15 supports up to PCM384 and DSD256). Audio distortion performance and output power have also been upgraded compared to the previous generation.

Apple MFi Certified for Guaranteed Performance and CompatIbility

The "i" in M15i indicates that it has been certified by Apple's 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.

Patented SiP Current Mode Amplifier

The Questyle M15i prioritizes resolving trade-offs between size, power efficiency, and audio performance in portable, battery-powered devices. It features two patented quad-core Current Mode Amplifier (CMA) SiP modules.

3.5mm and 4.4mm Dual Ports with Gain Adjustment

The M15i, equipped with (x4) current mode 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, rendering the M15i suitable for a wide range of apps and devices.

Specification:

DAC Capability
PCM: 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 Power:
- 3.5mm: RL=300Ω | Po=11.97mW & Vout (Max)=1.895Vrms
- 4.4mm: RL=300Ω | Po=22.6mW & Vout (Max)=2.624Vrms
Frequency Response: ±0.1dB (20Hz-20kHz) | ±2dB (20Hz-80kHz)
THD+N: 0.0003%
DAC: ESS flagship USB DAC chip ES9281AC

Whats In The Box
- M15i Mobile Headphone Amplifier with DAC
- USB Type-C to Type-C Cable
- USB Type-C to Type-A Cable
- Warranty Card
- User Manual