Questyle M18i Max

*** First batch with free case (case to be fulfilled later, ETA mid-June 2026)

Redefining Portable Flagship DAC
M18i | M18i Max, equipped with Qualcomm Snapdragon Sound™technology, features an intelligent battery energy management system, a high-definitionOLED screen, and supports HD calling to avoid awkward call interruptions. Whether through lossless Bluetooth wireless transmission or USB DACmode, it delivers an unprecedented high-fidelity listening experience.

Inside M18i | M18i Max are two SiP modules containing four groups of Questyle's premium-grade patented Current Mode amplifiers, balancing powerful drive with delicate tonality. It incorporates the selected flagship ESS ComboDACES9219Q in a dual DAC mono decoding design, paired with a TTA (Three-Tier Architecture) decoding framework comparable to desktop equipment, onceagain challenging the limits of portable audio quality.

M18i | M18i Max supports switching between USB DAC and dual-mode lossless Bluetooth for user flexibility. Its 16-core XMOS XU316 USB platform ensures comprehensive compatibility with smartphones, PCs, and gaming consoles. M18i is also Apple MFi licensed, meeting Apple's stringent requirements for power consumption and compatibility of external devices.

Full-Lamination OLED Screen
The pure matte black metal body is matched with a seamless full-screen display. All buttons and interfaces are discreetly housed on the sides, creating a visually zero-interference experience.

Intelligent Power Management SystemEnergy Management System
• If both USB ports are connected in PC mode, the M18i | M18i Max will prioritize power from the charging port.
• If an adapter is plugged into the dedicated charging USB port, the M18i | M18i Max enters battery charging mode and supports listening while charging, regardless of the current mode.


// GOOD TO KNOW
• DAC: ESS flagship USB DAC decoding
• Decoding Capability: PCM44.1kHz-384kHz (16/24/32bit) DSD64, DSD128,DSD256  
• Output Interface: 3.5mm single-ended, 4.4mm fully balanced
• Maximum Output Power: 1.5A
• THD+N :0.0002%
• Battery: 1800mAh Bluetooth battery life: 12 hours USB battery life: 7 hours
• Dimensions: 86[L] X 55[W] X 15[D]mm
• Chassis: CNC Anodized aluminum alloy
• Impedance / Gain Two-stage gain control (HIGH, STD)