diff --git a/src/lasp/device/lasp_rtaudiodaq.cpp b/src/lasp/device/lasp_rtaudiodaq.cpp
index 6716770..7326489 100644
--- a/src/lasp/device/lasp_rtaudiodaq.cpp
+++ b/src/lasp/device/lasp_rtaudiodaq.cpp
@@ -226,7 +226,6 @@ public:
                      OutDaqCallback outCallback) override final {
 
     DEBUGTRACE_ENTER;
-    lck lock(_mtx);
 
     assert(!monitorOutput);