Questyle M15C – Premium Portable Hi-Res DAC & Headphone Amplifier

The Questyle M15C is a high-performance portable USB-C DAC and headphone amplifier designed for audiophiles who demand uncompromising sound quality in a compact, travel-friendly form factor. Combining Questyle’s proprietary Current Mode Amplification technology with a flagship DAC chipset, the M15C delivers exceptional clarity, ultra-low distortion, and powerful output for both headphones and in-ear monitors.

Reference-Grade Hi-Res Audio Performance

At the heart of the Questyle M15C is the Cirrus Logic CS43198 flagship DAC, capable of decoding high-resolution PCM audio up to 384kHz / 32-bit and native DSD playback up to DSD256. This advanced digital-to-analog conversion ensures outstanding detail retrieval, precise imaging, and a natural, transparent sound signature across all music genres.

Quad Current Mode Amplification

The M15C features four patented Current Mode amplifier engines, delivering superior speed, accuracy, and efficiency compared to traditional voltage-mode designs. This architecture enables extremely low distortion and noise, preserving musical dynamics while maintaining absolute control over demanding headphones.

Dual Outputs with Manual Gain Control

Designed for maximum flexibility, the Questyle M15C includes both 3.5mm single-ended and 4.4mm balanced headphone outputs, supporting a wide range of audiophile cables and headphones. A manual gain switch allows users to select between low and high gain modes, ensuring optimal performance with sensitive IEMs as well as higher-impedance over-ear headphones.

Universal Plug-and-Play Compatibility

The M15C is fully plug-and-play with no drivers required. It supports Android smartphones, iPhones and iPads (MFi-certified), Windows PCs, and macOS computers, making it an ideal portable DAC for high-resolution streaming, desktop listening, and mobile audiophile setups.

Premium Aluminum Construction

Housed in a CNC-machined anodized aluminum chassis, the Questyle M15C offers excellent durability, effective heat dissipation, and a sleek minimalist design. Its ultra-compact size makes it perfect for pocket use, commuting, or pairing with laptops and mobile devices.

Technical Specifications

• DAC Chip: Cirrus Logic CS43198
• Amplification: Quad Current Mode Amplifier architecture
• PCM Support: Up to 384kHz / 32-bit
• DSD Support: DSD64 / DSD128 / DSD256
• Headphone Outputs:
  • 3.5mm single-ended
  • 4.4mm balanced
• Output Power:
  • 3.5mm: approx. 10.7mW @ 300Ω
  • 4.4mm: approx. 42.8mW @ 300Ω
• Total Harmonic Distortion + Noise: As low as 0.00028%
• Frequency Response: 20Hz – 20kHz (±0.1dB)
• Gain Settings: Low / High manual switch
• Operating Systems Supported:
  • Android 5.1 and above
  • iOS (MFi certified)
  • Windows 10 and above
  • macOS
• Chassis Material: CNC-machined aluminum alloy
• Dimensions: Approx. 61.9 × 27.9 × 12 mm

What’s Included

• Questyle M15C Portable DAC & Headphone Amplifier
• USB-C to USB-C cable
• USB-C to USB-A adapter
• User manual and warranty card