14. What is the difference between K9,K9Pro and K9 ESS?

the main functional differences between K9 and K9Pro?
1. Cancel the side Type-C port
2, cancel MQA support, the highest sampling support to PCM768k,DSD512; Coaxial support DSD64(DOP)-- K9Pro only to PCM384k,DSD256, and does not support coaxial DSD decoding
3. RGB indicator light changes to cyan when playing 48k and below (K9Pro is dark blue)
4. Support UAC1.0 and UAC2.0, set the switching mode through APP
5. Bluetooth mode equalizer supports PEQ
6. Change the filter settings to 3 (6 for K9E and 7 for K9Pro)

K9,K9 Pro and K9 Pro ESS is as follows