Questyle M18i - Mobile headphone amplifier with DAC

Questyle M18i is a compact and powerful portable DAC and headphone amplifier that delivers true high-end sound in a compact form factor. With Questyle's patented Current Mode Amplification technology combined with dual ESS DAC chips, the M18i offers extremely low distortion, high detail and a naturally dynamic soundstage. The device can be used both wired as a USB DAC and wirelessly via Bluetooth with support for high-resolution codecs, which provides great flexibility in everyday life. With both 4.4 mm balanced and 3.5 mm unbalanced outputs, the M18i can handle everything from sensitive in-ears to more demanding headphones. The clear OLED display, multiple operating modes and robust aluminum chassis make the Questyle M18i an obvious choice for those who want uncompromising sound quality - at home, in the office or on the go. Questyle M18i in brief: * Portable DAC and headphone amplifier in high-end class - For mobile and stationary use with uncompromising sound quality * Patented Current Mode Amplification (CMA) - Extremely low distortion and very high transparency and detail. * Dual ESS-DAC chips in dual-mono configuration - Precise channel separation and natural sound reproduction. * Wired and wireless connection - USB-DAC via USB-C and Bluetooth with support for high-resolution codecs. * Balanced and unbalanced headphone output - 4.4 mm balanced and 3.5 mm unbalanced for wide compatibility. * OLED display and precise volume control - Clear information and fine-tuning for all types of headphones. * Compact CNC-milled aluminum chassis - Robust, elegant and built for everyday use. "The Questyle M18i is a top performer in the dongle DAC segment with a large and precise soundstage, a clean sound profile, and a high level of technical capability. The quagmire will come at checkout time because the M18i is twice the price of other comparable models in production, and some might complain of its simplicity and lack of an app or on-screen features. If you consider it on sonic quality alone, you might find that the Questyle M18i is one of the best out there, and I can only think of one or two models that can surpass it sonically. Then again, those models are even more costly, and that puts it market-wise where the numbers are supposed to fall." Headfonics (Maj 2025)