Questyle QCC Dongle Pro 2 LDAC Bluetooth 5.4 Transmitter

Questyle QCC Dongle Pro 2 — Wireless Audio Elevated

Experience truly lossless wireless audio with the Questyle QCC Dongle Pro 2, a compact Bluetooth 5.4 transmitter engineered for audiophiles who refuse to compromise on sound quality. Supporting the full suite of Qualcomm audio codecs — including LDAC, aptX Lossless, aptX Adaptive, aptX HD, aptX, and SBC — this dongle delivers hi-res audio wirelessly across a wide range of devices and operating systems.

With Snapdragon Sound compatibility and MFi certification, the QCC Dongle Pro 2 bridges the gap between your source device and your favorite Bluetooth headphones or speakers without sacrificing a single detail in the music. Plug it into your PC, Mac, Android, or iOS device and enjoy a transmission range of 10 metres or more.

Key Features

• Bluetooth 5.4 for a stable, low-latency wireless connection
• LDAC & aptX Lossless support for studio-quality, bit-perfect audio streaming
• aptX Adaptive & aptX HD for dynamic, high-resolution audio at lower bit-rates
• Snapdragon Sound
certified — works seamlessly with Qualcomm-powered headphones
• MFi Certified — officially compatible with Apple devices
• Broad OS support: Windows XP through 11, Linux, Android, HarmonyOS, macOS, and iOS
• USB Type-A and USB Type-C inputs; RCA output for versatile connectivity
• Ultra-compact body (25.2 × 10.3 × 15.25 mm) with premium Vacuum Electroplating PC+ABS finish in Gun Grey
• Low power draw — only 33 mA at 48 kHz/24-bit aptX Adaptive operation
• DSD64 (2.8224 MHz) and PCM (44.1 kHz / 16-bit) playback support
• 2.4 GHz working frequency band (2.402–2.480 GHz) for reliable, interference-free transmission
• USB 5V powered — no batteries or charging required

Technical Specifications

Universal Compatibility

The QCC Dongle Pro 2 works across virtually every platform you own. Whether you're streaming from a Windows 11 gaming rig, a MacBook, an Android smartphone, or an iOS device, this transmitter handles it effortlessly — no proprietary drivers required for most systems.

For more information on Bluetooth audio standards and wireless audio quality, visit the NIST Communications Technology Laboratory, which provides guidance on wireless communication standards.

Frequently Asked Questions

Q: What is the difference between LDAC and aptX Lossless on the Questyle QCC Dongle Pro 2?

A: LDAC (developed by Sony) transmits audio at up to 990 kbps, preserving near-lossless quality. aptX Lossless (developed by Qualcomm) achieves bit-perfect CD-quality audio at 44.1 kHz/16-bit, meaning no audio data is lost during transmission. Both codecs are supported by the QCC Dongle Pro 2, giving you flexibility depending on your headphones' codec support.

Q: Is the Questyle QCC Dongle Pro 2 compatible with iPhones and iPads?

A: Yes. The QCC Dongle Pro 2 carries MFi (Made for iPhone/iPad) certification and is fully compatible with iOS devices. Simply plug it into the USB-C or USB-A port (with an appropriate adapter) of your Apple device and pair your Bluetooth headphones.

Q: Does the Questyle QCC Dongle Pro 2 require any drivers to operate?

A: For most operating systems — including Windows 10/11, macOS, Android, and HarmonyOS — the dongle operates as a plug-and-play USB audio device with no additional driver installation needed. Linux users may need minimal configuration depending on their distribution.

Q: What does Snapdragon Sound compatibility mean for my listening experience?

A: Snapdragon Sound is Qualcomm's end-to-end audio platform that ensures optimised performance when both the source device (transmitter) and the receiving headphones are Snapdragon Sound certified. This unlocks features like ultra-low latency, aptX Adaptive's highest bit-rate tiers, and stable high-resolution wireless streaming.