External audio device not showing at boot

[Solalparisien]

Hello everyone
This is my build:
- Hackintosh mojave
- gigabyte ga z97x-Gaming 7
- intel i7 4790k
- 32gb ddr3 1866mhz
- radeon rx 580
installation done with clover and multibeast.

My problem is the following:
I recently had to reinstall my hackintosh mojave config from scratch. Everything is working well as it used to be except my external audio amp connected in usb to my computer (SMSL A6). This is shown as external speaker in sound output menu.
When I switch on my computer the device does not appear automatically as an external speaker no matter in which usb port it is connected and is not visible as an usb device in the system report once I am on my Mojave desktop. But if I plug it out and replug it in an another usb port once on my mojave desktop than it works and I can have access to the sound. Of course I would like it to work without having to do that each time I power on my hackintosh.
I imagine that there is a very basic thing happening but if anyone can help me fixing it?

 

[Solalparisien]

Finally did a clean reinstall once more and it is sorted out