Questyle QCC Dongle Pro: The Ultimate Lossless Bluetooth Transmitter The Questyle QCC Dongle Pro is a revolutionary audio solution designed to eliminate the limitations of native device Bluetooth. This ultra-compact transmitter bypasses your device's standard codecs to deliver true, high-resolution, and low-latency wireless audio to your headphones, speakers, or DAC. Key Certifications and Codecs World's First MFi Certified Lossless Transmitter: Officially certified by Apple, the QCC Dongle Pro finally allows iPhone, iPad, and Mac users to transmit audio using high-end codecs beyond the standard AAC. Complete Lossless Support: Equipped with the latest Qualcomm Snapdragon Sound technology and Bluetooth 5.4, it supports the full suite of high-fidelity codecs, including: LDAC (up to 990kbps) aptX Lossless aptX Adaptive (optimized for low latency) aptX HD, aptX, and SBC Qualcomm Snapdragon Sound: Guarantees ultra-stable connections and ultra-low latency (as low as 48ms), essential for video synchronization and competitive gaming. Plug and Play Hi-Fi for Every Device The QCC Dongle Pro offers unparalleled compatibility and convenience: Universal Plug and Play: Requires no drivers on virtually any platform, including iOS, macOS, Windows (10/11), Android, Linux, and HarmonyOS. Gaming Console Compatible: Seamlessly connects to devices like the Nintendo Switch and PlayStation 5, upgrading your console's wireless audio experience. Ultra-Portable Design: Weighing only around 3 grams, the miniature USB-C design with included USB-A adapter makes it perfect for mobile use with your phone or tablet. Upgrade your wireless freedom without sacrificing audio quality. The Questyle QCC Dongle Pro is the essential accessory for audiophiles and gamers seeking the highest tier of wireless performance.

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1. Master-Level Audio in Your Pocket The Questyle M12i is a high-performance Mobile Hi-Fi DAC and Headphone Amplifier that brings Questyle’s world-renowned stationary audio technology into a portable form factor. Engineered to meet the strict standards of Apple MFi certification, the M12i ensures flawless compatibility and maximum performance for iPhone, iPad, and Mac users, as well as Android and PC enthusiasts. 2. Key Features & Patented Technology Patented Current Mode Amplification Unlike Traditional Amps: Most portable amps use Voltage Mode, which can struggle with high-frequency distortion. Questyle’s patented Current Mode Amplification offers a massive bandwidth and ultra-low distortion (0.0003%), providing a warm, natural, and powerful sound that mimics high-end desktop stacks. Infinite Driving Power: Despite its size, it intelligently detects the impedance of your headphones and automatically adjusts its gain level to provide the perfect drive. Flagship ESS Decoding Stage Lossless Precision: Powered by the ESS9281AC flagship SoC, the M12i supports high-resolution files up to 32-bit/384kHz and DSD256. Smart Status Indicator: The built-in LED changes color based on the audio format and sampling rate, giving you instant confirmation that you are listening to true high-resolution or MQA audio. MFi Certified & Universal Compatibility Apple Ready: As an MFi-certified device, the M12i guarantees stable connection and power management for Apple devices, avoiding the "accessory not supported" errors common with non-certified DACs. Plug-and-Play: No drivers are needed for iOS, Android, macOS, or Windows. Simply plug in and transform your device into a high-end audio player. 3. Technical Specifications Component Specification Amplification Patented Current Mode Technology DAC Chip ESS ES9281AC Decoding Support PCM 384kHz / DSD256 Output Port 3.5mm Headphone Jack THD+N 0.0003% Input Interface USB Type-C Chassis Material CNC Machined Aluminum (Space Gray) 4. Why the M12i is the Ultimate Travel Partner The Questyle M12i is designed for the audiophile who refuses to settle for "good enough" when traveling. While other mobile DACs can sound clinical or thin, the M12i provides a rich, holographic soundstage that brings your music to life. Its ultra-low power consumption ensures your phone's battery lasts longer, making it the perfect companion for long flights or daily commutes.

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1. The Portable Masterpiece The Questyle M18i is the definitive flagship of the M-series mobile DAC/Amp line. Engineered for the most demanding audiophiles, the M18i provides desktop-grade power in a device that fits in your hand. With a fully balanced circuit and enhanced Apple MFi certification, it is the ultimate solution for extracting every drop of detail from high-resolution streaming services like Tidal, Qobuz, and Apple Music. 2. Key Features & Reference Engineering Quad-Engine Current Mode Amplification Reference Purity: The M18i features four independent Current Mode Amplification modules. Unlike traditional voltage-mode amps, this patented technology eliminates the bottleneck of high-frequency distortion, providing a soundstage that is deep, wide, and incredibly natural. Massive Voltage Swing: Designed to drive professional-grade headphones, the M18i offers the energy and headroom required for 300Ω+ studio monitors while maintaining a silent, "black" background for ultra-sensitive IEMs. Dual-DAC Flagship Decoding Dual Chip Architecture: Equipped with a Dual-DAC configuration (utilizing flagship ESS Sabre chips), the M18i offers superior channel separation and a massive dynamic range of 130dB+. Ultra-High Resolution: Supports bit-perfect decoding for PCM up to 768kHz, DSD512, and full MQA rendering. Intelligent Power & Gain Management Hardware Gain Switch: A dedicated physical switch for High/Low gain allows you to instantly optimize the output for your specific headphones. TOREX Power Management: High-efficiency power management ensures that the M18i delivers maximum performance without draining your smartphone’s battery excessively. 3. Technical Specifications Component Specification Amplification 4x Patented Current Mode Engines DAC Chipset Dual Flagship ESS Sabre Series Outputs 4.4mm Balanced / 3.5mm Single-Ended Decoding Support PCM 768kHz / DSD512 / MQA THD+N < 0.0002% Connectivity USB Type-C (Apple MFi Certified) Material CNC 6063 Aviation Aluminum 4. Why the M18i is the Final Upgrade The Questyle M18i is for the listener who refuses to compromise. It features an upgraded Gold-Plated PCB and the signature transparent glass design that showcases the precision of Questyle’s engineering. If you own flagship headphones and want to hear them at their absolute limit without being tethered to a desk, the M18i is the most capable mobile DAC/Amp ever produced.

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1. Reference Audio for the Type-C Era The Questyle M15C is a professional-grade Mobile DAC and Headphone Amplifier that brings the world-renowned "Current Mode" sound to the modern Type-C ecosystem. With the industry shifting toward universal Type-C connectivity, the M15C is fine-tuned to provide a bit-perfect, high-resolution bridge between your digital files and your high-end headphones, delivering desktop-class transparency in a pocket-sized form factor. 2. Key Features & Audiophile Innovations The Power of Current Mode Amplification Patented Tech: At the core of the M15C are four Current Mode Amplification engines. Unlike traditional voltage-based amps, this technology offers a massive 1MHz bandwidth and ultra-low distortion, resulting in a sound that is incredibly fast, detailed, and organic. Effortless Dynamics: It provides a level of control over your headphone drivers that standard mobile DACs cannot match, ensuring tight bass, clear mids, and airy highs. High-Resolution ESS Flagship Decoding Bit-Perfect Audio: Featuring the ESS ES9281AC flagship DAC chip, the M15C supports hardware decoding for PCM 384kHz, DSD256, and MQA. Dual Output Versatility: Equipped with both a 3.5mm Single-Ended and a 4.4mm Fully Balanced output, providing maximum compatibility for all your professional cables. Advanced Power Management & Gain Switch Mobile-Friendly Efficiency: The M15C is optimized for low power consumption, preventing excessive battery drain on your smartphone while maintaining high-voltage swing. Manual Gain Control: A dedicated High/Low gain switch allows you to tailor the output power—use Low gain for sensitive IEMs to eliminate hiss, or High gain for demanding over-ear headphones. 3. Technical Specifications Component Specification Amplification 4x Patented Current Mode Engines DAC Chip ESS Sabre ES9281AC Outputs 4.4mm Balanced / 3.5mm Single-Ended Decoding Support PCM 384kHz / DSD256 / MQA THD+N 0.0003% Input Port USB Type-C Body Material CNC Machined Aluminum + Tempered Glass 4. Why the M15C is the Gold Standard The Questyle M15C is more than a dongle; it is a portable statement of engineering. Its transparent glass design allows you to see the high-end components and gold-plated PCB, symbolizing the transparency of the audio signal itself. For users who have transitioned to Type-C devices and want a dedicated, high-performance audio path, the M15C offers the most refined listening experience available today.

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1. Desktop Performance, Pocket Mobility The Questyle M15i is the pinnacle of mobile audio engineering. Building on the award-winning legacy of the original M15, the "i" version brings enhanced Apple MFi certification and refined circuitry. By utilizing four total Current Mode Amplification circuits, the M15i provides a level of driving power and sonic transparency that was previously thought impossible for a device powered solely by a smartphone. 2. Key Features & Reference-Grade Tech Four Current Mode Amplification Engines Dual-Engine Architecture: The M15i contains two patented Current Mode Amplification modules per channel (four total). This balanced approach delivers a massive soundstage, lightning-fast transient response, and virtually zero background noise. Pure Analog Texture: Unlike traditional op-amp designs that can sound "digital," Current Mode technology provides a warm, organic, and holographic presentation that honors the original recording. Dual Output Options: Balanced & Single-Ended 4.4mm Balanced Output: For those using high-end balanced cables, the 4.4mm port offers maximum power and channel separation. 3.5mm Single-Ended Output: Optimized for standard headphones and IEMs, ensuring high compatibility without sacrificing quality. Manual Gain Switch: A physical hardware switch allows you to toggle between High/Low gain, ensuring the M15i can drive anything from 16Ω In-Ear Monitors to 300Ω studio headphones. The Iconic Transparent Aesthetic Visual Engineering: The M15i retains its signature transparent glass cover, revealing the high-end components, gold-plated PCB, and precise soldering within. It is as much a work of art as it is a piece of audio equipment. Apple MFi Certified: Fully certified by Apple, ensuring the M15i handles power management perfectly and supports full bit-perfect playback on iOS devices. 3. Technical Specifications Component Specification Amplification 4x Patented Current Mode Modules DAC Chip Flagship ESS ES9281AC Outputs 4.4mm Balanced / 3.5mm Single-Ended Decoding Support PCM 384kHz / DSD256 THD+N 0.0003% (Reference Level) Gain Control Hardware Manual Switch (High/Low) Body Material CNC Aluminum + Tempered Glass 4. Why the M15i is the Audiophile's Choice The Questyle M15i (ID for illustrative purposes) is designed for those who own high-end headphones (like Focal, Sennheiser, or HiFiMAN) and want to hear them at their full potential while away from their desk. It provides a "black" background with zero hiss, making it perfect for hyper-sensitive IEMs, yet has the voltage swing to make full-sized headphones sing.

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