@@ -573,11 +573,11 @@ def setparams(self, params):
         else:
             nchannels, sampwidth, framerate, nframes, comptype, compname, format = params
         self.setnchannels(nchannels)
+        self.setformat(format)
         self.setsampwidth(sampwidth)
         self.setframerate(framerate)
         self.setnframes(nframes)
         self.setcomptype(comptype, compname)
-        self.setformat(format)
 
     def getparams(self):
         if not self._nchannels or not self._sampwidth or not self._framerate: