M18i Headphone Amplifier Bluetooth 5.4 Receiver Portable USB DAC Amps High Resolution with 4.4mm and 3.5mm Dual Outputs Supports PCM 384kHz/DSD256 LDAC Lossless for Smartphones/PC/Laptops

Price: $399.00 - $299.25
(as of Mar 30, 2025 02:23:32 UTC – Details)

From the brand

In December 2012, Questyle was founded in Shenzhen,China, focusing on the research and development of high-tech lossless audio products and holding the independent brand of “Questyle”.

Questyle’s mission is to help users solve technical problems, be free from restricted surroundings, offering a immersive audio experience in a simple way.

To surpass users’ expectations for DAC performance, the M18i comes with the latest ESS flagship ES9219Q DAC chip. Questyle and ESS engineers worked together to develop the TTA DAC framework, to take the performance of M18i to the limit of what’s physically possible.
Resolving the trade-offs between size, power consumption, and audio performance is a top priority for battery-powered compact portable devices. The M18i comes with two patented quad-core Current Mode Amplifier SiP modules, designed by Questyle Technology. The amplifier provides powerful drive with delicate timbre, while once again establishing a new ultra-low distortion record at 0.0002%.
The M18i provides both 3.5mm unbalanced and 4.4mm balanced outputs. Its manual gain control allows adjustment according to personal preferences and headphone/audio-system characteristics, making it suitable for a wide range of apps and devices. An MFB button is provided for pairing and music playback in Bluetooth mode. Volume buttons provide 60 levels of loudness.
The M18i supports seamless switching between lossless Bluetooth and USB DAC modes. It features Qualcomm’s latest Snapdragon Sound technology with Bluetooth 5.4, supporting AAC, SBC, aptX, aptX HD, aptX Adaptive, LE AUDIO, and 24bit/96kHz LDAC. ​ Enjoy wireless, lossless Bluetooth audio with all devices that support these codecs.
The M18i is equipped with Qualcomm’s next-generation Snapdragon Sound technology, fully certified by Qualcomm and LDAC. This enables the new Qualcomm aptX Adaptive and aptX HD audio codecs, delivering wireless lossless Bluetooth audio at CD-quality 16-bit 44.1kHz, and high-resolution audio at 24-bit 48kHz and 96kHz, on wireless earbuds and headphones.
The M18i ensures crystal-clear voice quality and call stability with Qualcomm’s cVc Generation 8.0 call solution with ClearVoice Capture technology. Environmental noise is suppressed while providing clear sound to the user.The M18i also includes Infineon’s flagship microphone, which can be used with wired headphones for voice calls. The microphone has a range of two meters.