diff --git a/homeassistant/components/soundtouch/media_player.py b/homeassistant/components/soundtouch/media_player.py
index 63e5a551745..fa5c0dd7095 100644
--- a/homeassistant/components/soundtouch/media_player.py
+++ b/homeassistant/components/soundtouch/media_player.py
@@ -78,21 +78,25 @@ class SoundTouchMediaPlayer(MediaPlayerEntity):
     _attr_device_class = MediaPlayerDeviceClass.SPEAKER
     _attr_has_entity_name = True
     _attr_name = None
+    _attr_source_list = [
+        Source.AUX.value,
+        Source.BLUETOOTH.value,
+    ]
 
     def __init__(self, device: SoundTouchDevice) -> None:
         """Create SoundTouch media player entity."""
 
         self._device = device
 
-        self._attr_unique_id = self._device.config.device_id
+        self._attr_unique_id = device.config.device_id
         self._attr_device_info = DeviceInfo(
-            identifiers={(DOMAIN, self._device.config.device_id)},
+            identifiers={(DOMAIN, device.config.device_id)},
             connections={
-                (CONNECTION_NETWORK_MAC, format_mac(self._device.config.mac_address))
+                (CONNECTION_NETWORK_MAC, format_mac(device.config.mac_address))
             },
             manufacturer="Bose Corporation",
-            model=self._device.config.type,
-            name=self._device.config.name,
+            model=device.config.type,
+            name=device.config.name,
         )
 
         self._status = None
@@ -131,14 +135,6 @@ class SoundTouchMediaPlayer(MediaPlayerEntity):
         """Name of the current input source."""
         return self._status.source
 
-    @property
-    def source_list(self):
-        """List of available input sources."""
-        return [
-            Source.AUX.value,
-            Source.BLUETOOTH.value,
-        ]
-
     @property
     def is_volume_muted(self):
         """Boolean if volume is currently muted."""