The USB-C transmitter adds LDAC, aptX Lossless, LE Audio and Auracast to compatible phones, computers and consoles, though its premium features come with some practical compromises.
Questyle’s QCC Dongle Pro2 is a compact USB-C Bluetooth transmitter aimed at a familiar problem in modern audio: many phones, tablets and laptops still cannot make full use of the codecs supported by premium wireless headphones. According to Questyle’s announcement, the device is Apple MFi certified and adds Bluetooth 6.1, LDAC, aptX support, aptX HD, aptX Adaptive, aptX Lossless, LHDC and LE Audio via LC3, with Auracast also included. The company says the goal is to lift codec limits on source devices that would otherwise be restricted to basic Bluetooth audio.
That positioning matters most for Apple users, who are still often confined to SBC and AAC when using native Bluetooth connections. Questyle says the Pro2 is designed to work around that limitation without requiring people to replace otherwise capable headphones or source devices. AudioXpress reported that the product is intended to overcome platform restrictions by giving the user more control over both transmission and codec selection, while Stereonet noted that the transmitter is pitched as a way to unlock higher-quality wireless playback on smartphones, computers and gaming consoles.
Questyle’s own material places particular emphasis on compatibility and convenience. The company says the app allows device management, codec switching and firmware updates, and that the dongle is meant to offer a stable experience across Apple’s ecosystem as well as other USB-C hardware. It also claims LDAC support at up to 990kbps when paired with compatible headphones or speakers. In practice, that makes the Pro2 less a universal Bluetooth replacement than a targeted upgrade for listeners who already own headphones capable of higher-end codecs but cannot access them through the source device alone.
Gaming is another part of the pitch. Questyle says the Pro2 can reduce latency substantially when Game Mode is enabled, and the product literature frames Bluetooth 6.1 as a route to better stability and lower delay. The ecoustics review found that the dongle did meaningfully reduce latency in testing, although not to the level needed for serious competitive play. It also noted that the device works with consoles such as the Switch family, but occupies the USB-C port, which means handheld charging is no longer possible while the transmitter is in use.
The broader appeal of the QCC Dongle Pro2 lies in how much codec support it compresses into a small accessory. Compared with simpler transmitters, it offers a wider feature set and a more ambitious attempt to bridge the gap between high-end wireless headphones and source devices that are not built for them. The trade-offs are equally clear: the dongle depends on a companion app for setup, has no USB-C pass-through, and sits at the premium end of the market. Even so, for listeners who want LDAC, LE Audio or Auracast support without changing their main device, Questyle’s latest transmitter makes a strong case for itself.
Disclaimer: This content is intended for informational purposes only. Readers are advised to exercise their own judgement, conduct due diligence, or consult a qualified expert before acting on any information provided.
