For audiophiles seeking to unlock high-resolution wireless audio from their iPhone, iPad, or gaming console, the Questyle QCC Dongle series has long been a go-to solution. With the launch of the QCC Dongle Pro2, we put both generations head-to-head to see what's changed — and whether the upgrade makes sense.
Quick Specs Comparison
| Spec | QCC Dongle Pro | QCC Dongle Pro2 |
|---|---|---|
| Bluetooth Version | 5.4 | 6.1 |
| LDAC (990kbps) | ✅ | ✅ |
| LHDC | ❌ | ✅ V5 |
| LE Audio | ❌ | ✅ |
| Auracast™ | ❌ | ✅ |
| aptX Adaptive | ✅ | ✅ |
| aptX Lossless | ✅ | ❌ |
| Apple MFi Certified | ✅ | ✅ |
| Low Latency | 48ms | 48ms / 20ms |
| App Control | ✅ | ✅ |
| Price | $74.99 | $79.99 |
Key Upgrades Explained
1. Bluetooth 5.4 → 6.1: More Than a Number
The Pro2's Bluetooth 6.1 delivers meaningfully stronger interference resistance in crowded wireless environments — think airports, cafés, and trade shows — reducing stuttering and dropouts. It also brings enhanced privacy protection and improved power efficiency, making it a genuine quality-of-life upgrade for daily use.
2. LHDC V5 Support Added
One of the Pro2's most significant new additions. LHDC V5 offers expanded soundstage and improved detail retrieval compared to LDAC, and for users pairing with FiiO, HiBy, or other LHDC-compatible devices, the Pro2 unlocks a higher tier of wireless audio performance that the original Pro simply cannot reach.
3. LE Audio + Auracast™: Built for the Future
The Pro2 supports LE Audio and Auracast™ broadcast audio, enabling one-to-many wireless sharing for multi-person listening, public audio environments, and hearing aid connectivity. This is a forward-looking feature set entirely absent from the original Pro.
4. Lower Latency for Gaming
The original Pro already impressed with 48ms aptX Adaptive latency. The Pro2 goes further — with compatible Qualcomm Gen2 receivers, LE Audio mode drops latency to as low as 20ms, bringing wireless gaming audio closer than ever to a wired experience on Switch, PS5, and handheld consoles.
Who Should Choose the Pro2?
Upgrade to the Pro2 if you:
- Own headphones or DAPs with LHDC V5 support
- Use Bluetooth in busy, interference-heavy environments
- Want Auracast™ multi-listener sharing capability
- Need the lowest possible gaming latency
- Want a device with longer ecosystem compatibility ahead
The original Pro still makes sense if you:
- Primarily use LDAC or aptX Lossless codecs
- Have a tighter budget and use Bluetooth in simple environments
- Have no need for LE Audio or Auracast™
Verdict
At just $5 more than the original Pro, the QCC Dongle Pro2 delivers Bluetooth 6.1, LHDC V5, LE Audio, and Auracast™ — a compelling set of real-world upgrades for a minimal price difference. For new buyers, the Pro2 is the clear recommendation. For existing Pro owners, the upgrade is worth it if you have LHDC-compatible gear or want to future-proof your wireless audio setup.
