Pipewire settings for FiiO K3

alsa-monitor.conf

properties = {}

rules = [
  {
	  matches = [{
		  node.name = "alsa_output.usb-GuangZhou_FiiO_Electronics_Co._Ltd_FiiO_K3-00.iec958-stereo"
	  }]

	  actions = {
		  update-props = {
		  	audio.format = "S32LE"

		  	# Should be twice the desired rate
		  	audio.rate = 384000
	  		api.alsa.headroom = 0
	  		api.alsa.disable-batch = true
	  	}
  	}
  }

  {
    matches = [
      { device.name = "~alsa_card.*" }
    ]
    actions = {
      update-props = {
        api.alsa.use-acp = true
        api.acp.auto-profile = false
        api.acp.auto-port = false
      }
    }
  }
  {
    matches = [
      { node.name = "~alsa_input.*" }
      { node.name = "~alsa_output.*" }
    ]
    actions = {
      update-props = { node.pause-on-idle = false }
    }
  }
]

pipewire-pulse.conf

context.properties = {}
context.exec = []
stream.properties = {}

context.spa-libs = {
    audio.convert.* = audioconvert/libspa-audioconvert
    support.*       = support/libspa-support
}

context.modules = [
    { name = libpipewire-module-rtkit
        args = {
            nice.level   = -11
        }
        flags = [ ifexists nofail ]
    }
    { name = libpipewire-module-protocol-native }
    { name = libpipewire-module-client-node }
    { name = libpipewire-module-adapter }
    { name = libpipewire-module-metadata }

    { name = libpipewire-module-protocol-pulse
        args = {
            server.address = [
                "unix:native"
            ]

            pulse.min.req = 128/192000
	          pulse.min.quantum = 128/192000
        }
    }
]

pipewire.conf

context.properties = {
    link.max-buffers = 16
    core.daemon      = true
    core.name        = pipewire-0
    default.clock.allowed-rates = [ 192000 48000 44100 ]
    default.clock.rate = 192000
    default.clock.quantum = 32
    default.clock.min-quantum = 16
    default.clock.max-quantum = 256
}

context.spa-libs = {
    audio.convert.* = audioconvert/libspa-audioconvert
    api.alsa.*      = alsa/libspa-alsa
    api.v4l2.*      = v4l2/libspa-v4l2
    api.libcamera.* = libcamera/libspa-libcamera
    api.bluez5.*    = bluez5/libspa-bluez5
    api.vulkan.*    = vulkan/libspa-vulkan
    api.jack.*      = jack/libspa-jack
    support.*       = support/libspa-support
}

context.modules = [
    { name = libpipewire-module-rtkit
        args = {
        }
        flags = [ ifexists nofail ]
    }
    { name = libpipewire-module-protocol-native }
    { name = libpipewire-module-profiler }
    { name = libpipewire-module-metadata }
    { name = libpipewire-module-spa-device-factory }
    { name = libpipewire-module-spa-node-factory }
    { name = libpipewire-module-client-node }
    { name = libpipewire-module-client-device }
    { name = libpipewire-module-portal
        flags = [ ifexists nofail ]
    }
    { name = libpipewire-module-access
        args = {
        }
    }
    { name = libpipewire-module-adapter }
    { name = libpipewire-module-link-factory }
    { name = libpipewire-module-session-manager }
]

context.objects = [
    { factory = spa-node-factory
        args = {
            factory.name    = support.node.driver
            node.name       = Dummy-Driver
            node.group      = pipewire.dummy
            priority.driver = 20000
        }
    }
    { factory = spa-node-factory
        args = {
            factory.name    = support.node.driver
            node.name       = Freewheel-Driver
            priority.driver = 19000
            node.group      = pipewire.freewheel
            node.freewheel  = true
        }
    }
]

context.exec = [
    { path = "/bin/wireplumber"  args = "" }
]