Zenbook UX3402VA_UX3402VA - No audio

Hi all, I’ve just installed Nixos 24.05 on my Asus Zenbook. Sadly I can’t get the audio on the in-built speakers to work. I found the following post from last year: Asus Zenbook No Sound Output - #2 by raab

Sadly the above doesn’t work.

My boot config:

  boot.loader.efi.canTouchEfiVariables = true;
  boot.loader.grub = {
    enable = true;
    devices = ["nodev"];
    efiSupport = true;
    configurationLimit = 10;
    extraConfig = "
      acpi /ssdt-csc3551.aml
    ";
  };

Is anyone able to point me in the right direction, please?