Are the accessories of the jack cables and the Bluetooth® receiver of the 2nd generation also suitable for XELENTO (1st generation) and earphones from other brands?

Thanks to the standardized MMCX interface, our jack cables and the Bluetooth® receiver of the 2^nd generation can also be used reliably with the 1^st generation of XELENTO earphones.
Since with the 2^nd generation we are using higher-quality components for improved connection stability of the MMCX connectors on the cables, we would no longer recommend using the 1^st generation cables on XELENTO earphones (2^nd generation) for this reason .
We cannot comment on the compatibility with earphones or cables from other brands, except that we use standard-compliant, extensively tested MMCX plug and socket components with the XELENTO (2^nd generation).