diff --git a/config/wireplumber/wireplumber.conf.d/kef-lsx-no-suspend.conf b/config/wireplumber/wireplumber.conf.d/kef-lsx-no-suspend.conf
new file mode 100644
index 00000000..02955660
--- /dev/null
+++ b/config/wireplumber/wireplumber.conf.d/kef-lsx-no-suspend.conf
@@ -0,0 +1,19 @@
+## Never suspend the KEF LSX II LT USB sink.
+## The speaker's USB firmware stops answering control requests when the host
+## stops the stream after idle (usb_set_interface -110), and only a replug
+## recovers it. Keeping the stream open avoids the trigger.
+
+monitor.alsa.rules = [
+  {
+    matches = [
+      {
+        node.name = "~alsa_output.usb-KEF_LSX_II_LT.*"
+      }
+    ]
+    actions = {
+      update-props = {
+        session.suspend-timeout-seconds = 0
+      }
+    }
+  }
+]
diff --git a/migrations/1789130779.sh b/migrations/1789130779.sh
new file mode 100644
index 00000000..56d9fe20
--- /dev/null
+++ b/migrations/1789130779.sh
@@ -0,0 +1,9 @@
+echo "Keep the KEF LSX II LT USB sink from suspending"
+
+conf="wireplumber/wireplumber.conf.d/kef-lsx-no-suspend.conf"
+
+if [[ ! -f "$HOME/.config/$conf" ]]; then
+  omarchy-refresh-config "$conf"
+  # WirePlumber only reads conf.d at startup; restart it if it is running.
+  systemctl --user try-restart wireplumber.service 2>/dev/null || true
+fi