The Oppo K9x supports 2 codecs (aptX, SBC). The Energizer Energy E401 supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC).
| Codec | Oppo K9x Details | Change |
Energizer Energy E401 Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | Yes |
| LDAC | No | Yes |
| AAC | No | Yes |
| UHQ | No | No |
| aptX | Yes | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 5.1 | 4.0 |
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