| Part Number | Chip type | BT Ver | Stereo | aptX | aptX-HD | ANC | TWS | TWM | CVC | I2S | SPDIF | ANT | Manual | Buy | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EM6C835A | CSR8635 | 4.1 | √ | X | X | X | X | X | X | X | X | √ | |||
| EM6C835B | CSR8635 | 4.1 | √ | X | X | X | X | X | X | X | X | X | |||
| EM6C625A | CSRA64215 | 4.2 | √ | √ | X | X | √ | X | X | √ | X | √ | |||
| EM6C625B | CSRA64215 | 4.2 | √ | √ | X | X | √ | X | X | √ | X | X | |||
| EM6C870B | CSR8670 | 5.0 | √ | √ | X | X | √ | X | * | √ | √ | X | |||
| EM6C875B | CSR8675 | 5.0 | √ | √ | * | X | √ | X | * | √ | √ | X | |||
| EM6Q303A | QCC3003 | 5.0 | √ | X | X | X | X | X | √ | √ | X | √ | |||
| EM6Q308A | QCC3008 | 5.0 | √ | √ | X | X | √ | X | √ | √ | X | √ | |||
| EM6Q308B | QCC3008 | 5.0 | √ | √ | X | X | √ | X | √ | √ | X | X | |||
| EM6Q320B | QCC3020 | 5.0 | X | X | X | X | √ | X | √ | √ | X | X | |||
| EM6Q321B | QCC3021 | 5.0 | √ | X | X | X | √ | X | √ | √ | √ | X | |||
| EM6Q334B | QCC3034 | 5.0 | √ | √ | √ | X | X | X | √ | √ | X | X | |||
| EM6Q340B | QCC3040 | 5.0 | X | √ | √ | √ | X | √ | √ | √ | X | X | |||
| EM6Q525B | QCC5125 | 5.0 | √ | * | * | * | √ | X | * | √ | √ | X | |||
| EM6Q526B | QCC5126 | 5.0 | √ | * | * | * | √ | X | * | √ | √ | X | |||
| EM6Q544B | QCC5144 | 5.0 | √ | * | * | * | X | √ | * | √ | √ | X | |||
| Data Direction | |||||||||||||||
| Chip type | The main control chip model of the module | ||||||||||||||
| BT Ver | Bluetooth version | ||||||||||||||
| Stereo | "√" support Bluetooth Stereo "X" Support Bluetooth mono | ||||||||||||||
| aptX | Improve sound quality, reduce delay, support 16bit / 48K audio (Note: SBC is 16bit / 44.1k) | ||||||||||||||
| aptX-HD | Improve sound quality, reduce delay, support 24bit / 48K audio | ||||||||||||||
| ANC | Active noise reduction, specific effects need to be coordinated with reasonable structure adjustment, default firmware does not open this function, can be customized development | ||||||||||||||
| TWS | True wireless stereo ,phone can connect two wireless earphone at the same，This function is not enabled by default firmware and can be customized | ||||||||||||||
| TWM | True wireless mirroring TWS upgrated version，More intelligent master-slave switch, default firmware does not enable this function, can be customized development | ||||||||||||||
| CVC | Call echo cancellation algorithm, the specific effect needs to cooperate with reasonable structure adjustment, default firmware does not enable this function, can be customized development. | ||||||||||||||
| I2S | I2S Digital audio output | ||||||||||||||
| SPDIF | SPDIF Digital audio output | ||||||||||||||
| ANT | PCB antenna | ||||||||||||||
| Mark | "*"it means that need license | ||||||||||||||