diff --git a/src/auracast/multicast.py b/src/auracast/multicast.py
index aa05cdb..a1f99f7 100644
--- a/src/auracast/multicast.py
+++ b/src/auracast/multicast.py
@@ -60,7 +60,29 @@ class ModSoundDeviceAudioInput(audio_io.SoundDeviceAudioInput):
 
     def _open(self):
         """Patched _open method that creates RawInputStream with low-latency parameters."""
-        
+        try:
+            dev_info = sd.query_devices(self._device)
+            hostapis = sd.query_hostapis()
+            api_index = dev_info.get('hostapi')
+            api_name = hostapis[api_index]['name'] if isinstance(api_index, int) and 0 <= api_index < len(hostapis) else 'unknown'
+            pa_ver = None
+            try:
+                pa_ver = sd.get_portaudio_version()
+            except Exception:
+                pass
+            logging.info(
+                "SoundDevice backend=%s device='%s' (id=%s) ch=%s default_low_input_latency=%.4f default_high_input_latency=%.4f portaudio=%s",
+                api_name,
+                dev_info.get('name'),
+                self._device,
+                dev_info.get('max_input_channels'),
+                float(dev_info.get('default_low_input_latency') or 0.0),
+                float(dev_info.get('default_high_input_latency') or 0.0),
+                pa_ver[1] if isinstance(pa_ver, tuple) and len(pa_ver) >= 2 else pa_ver,
+            )
+        except Exception as e:
+            logging.warning("Failed to query sounddevice backend/device info: %s", e)
+
         # Create RawInputStream with injected low-latency parameters
         self._stream = sd.RawInputStream(
             samplerate=self._pcm_format.sample_rate,