The O2 XDA Guide and QCY QY19 have 1 common Bluetooth A2DP audio codec (SBC). The O2 XDA Guide supports 1 codec (SBC). The QCY QY19 supports 2 codecs (aptX, SBC).
| Codec | O2 XDA Guide Details | Change |
QCY QY19 Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | No |
| LDAC | No | No |
| AAC | No | No |
| UHQ | No | No |
| aptX | No | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 2.0 | 4.1 |
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