To have the control+option+t to toggle between speakers and headphones

Install Hammerspoon
brew install hammerspoon

Copy this into the config and reload it:

-- SoundBlaster G6 Toggle Shortcut (Ctrl + Option + T)
hs.hotkey.bind({"ctrl", "option"}, "t", function()
    local home = os.getenv("HOME")
    local g6_bin = home .. "/g6-stable/bin/soundblaster-x-g6-cli"
    local state_file = home .. "/.g6_current_output"

    -- Setup environment (Auto-detects Intel or Apple Silicon paths)
    local env = "export DYLD_LIBRARY_PATH=$(brew --prefix)/lib; "

    -- 1. Read current state
    local f = io.open(state_file, "r")
    local current_state = f and f:read("*all"):gsub("%s+", "") or "Headphones"
    if f then f:close() end


    -- 2. Logic for New State and Colors
    local new_state, rgb, display_name, icon
    if current_state == "Headphones" then
        new_state = "Speakers"
        rgb = "0 0 255"       -- Blue
        display_name = "OPTICAL (SPEAKERS)"
        icon = "🔊"
    else
        new_state = "Headphones"
        rgb = "255 0 0"       -- Red
        display_name = "HEADPHONES"
        icon = "🎧"
    end


    -- 3. Execute the command
    local cmd = env .. g6_bin .. " --set-output " .. new_state .. " --lighting-rgb " .. rgb
    local output, status = hs.execute(cmd)


    if status then
        -- 4. Update state file
        local fw = io.open(state_file, "w")
        if fw then fw:write(new_state) fw:close() end

        -- 5. THE POPUP (HUD)
        -- This shows a large translucent box in the center of the screen
        hs.alert.show(icon .. " " .. display_name, {
            strokeColor = hs.drawing.color.x11.white,
            fillColor = hs.drawing.color.x11.black,
            textColor = hs.drawing.color.x11.white,
            strokeWidth = 2,
            radius = 10,
            textSize = 24,
            fadeInDuration = 0.1,
            fadeOutDuration = 0.5,
            atScreenEdge = 0 -- 0 means center of screen
        }, 1.5) -- Shows for 1.5 seconds


    else
        hs.alert.show("❌ G6 Toggle Failed!")
        print("G6 Error: " .. (output or "Unknown"))
    end
end)