diff --git a/macloop/_macloop.pyi b/macloop/_macloop.pyi
index 5db45e5..2afd1d9 100644
--- a/macloop/_macloop.pyi
+++ b/macloop/_macloop.pyi
@@ -20,13 +20,13 @@ class AudioProcessingConfig:
 
     def __init__(
         self,
-        sample_rate: int = 16000,
-        channels: int = 1,
-        enable_aec: bool = True,
-        enable_ns: bool = True,
+        sample_rate: int = 48000,
+        channels: int = 2,
+        enable_aec: bool = False,
+        enable_ns: bool = False,
         sample_format: str = "f32",
         aec_stream_delay_ms: int = 0,
-        aec_auto_delay_tuning: bool = True,
+        aec_auto_delay_tuning: bool = False,
         aec_max_delay_ms: int = 140,
     ) -> None: ...
 
diff --git a/src/config.rs b/src/config.rs
index 1db0b9a..ca8af88 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -25,13 +25,13 @@ pub struct AudioProcessingConfig {
 impl AudioProcessingConfig {
     #[new]
     #[pyo3(signature = (
-        sample_rate=16000, 
-        channels=1, 
-        enable_aec=true, 
-        enable_ns=true, 
+        sample_rate=48000,
+        channels=2,
+        enable_aec=false,
+        enable_ns=false,
         sample_format="f32".to_string(), 
         aec_stream_delay_ms=0,
-        aec_auto_delay_tuning=true,
+        aec_auto_delay_tuning=false,
         aec_max_delay_ms=140
     ))]
     fn new(
diff --git a/src/lib.rs b/src/lib.rs
index 4ed2b44..e47fba1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -72,13 +72,13 @@ impl AudioEngine {
 
         let config = config.unwrap_or_else(|| {
             config::AudioProcessingConfig {
-                sample_rate: 16000,
-                channels: 1,
-                enable_aec: true,
-                enable_ns: true,
+                sample_rate: 48000,
+                channels: 2,
+                enable_aec: false,
+                enable_ns: false,
                 sample_format: "f32".to_string(),
                 aec_stream_delay_ms: 0,
-                aec_auto_delay_tuning: true,
+                aec_auto_delay_tuning: false,
                 aec_max_delay_ms: 140,
             }
         });
diff --git a/tests/test_config_defaults.py b/tests/test_config_defaults.py
new file mode 100644
index 0000000..959a384
--- /dev/null
+++ b/tests/test_config_defaults.py
@@ -0,0 +1,49 @@
+from __future__ import annotations
+
+import re
+from pathlib import Path
+
+from macloop._macloop import AudioProcessingConfig
+
+
+def _pyi_defaults() -> dict[str, object]:
+    pyi_path = Path(__file__).resolve().parents[1] / "macloop" / "_macloop.pyi"
+    text = pyi_path.read_text(encoding="utf-8")
+
+    patterns = {
+        "sample_rate": r"sample_rate:\s*int\s*=\s*(\d+)",
+        "channels": r"channels:\s*int\s*=\s*(\d+)",
+        "enable_aec": r"enable_aec:\s*bool\s*=\s*(True|False)",
+        "enable_ns": r"enable_ns:\s*bool\s*=\s*(True|False)",
+        "sample_format": r"sample_format:\s*str\s*=\s*\"([^\"]+)\"",
+        "aec_stream_delay_ms": r"aec_stream_delay_ms:\s*int\s*=\s*(-?\d+)",
+        "aec_auto_delay_tuning": r"aec_auto_delay_tuning:\s*bool\s*=\s*(True|False)",
+        "aec_max_delay_ms": r"aec_max_delay_ms:\s*int\s*=\s*(\d+)",
+    }
+
+    result: dict[str, object] = {}
+    for key, pattern in patterns.items():
+        match = re.search(pattern, text)
+        assert match is not None, f"Could not find default for {key} in _macloop.pyi"
+        raw = match.group(1)
+        if raw in {"True", "False"}:
+            result[key] = raw == "True"
+        elif key == "sample_format":
+            result[key] = raw
+        else:
+            result[key] = int(raw)
+    return result
+
+
+def test_audio_processing_config_defaults_match_pyi_and_runtime() -> None:
+    pyi = _pyi_defaults()
+    runtime = AudioProcessingConfig()
+
+    assert runtime.sample_rate == pyi["sample_rate"]
+    assert runtime.channels == pyi["channels"]
+    assert runtime.enable_aec == pyi["enable_aec"]
+    assert runtime.enable_ns == pyi["enable_ns"]
+    assert runtime.sample_format == pyi["sample_format"]
+    assert runtime.aec_stream_delay_ms == pyi["aec_stream_delay_ms"]
+    assert runtime.aec_auto_delay_tuning == pyi["aec_auto_delay_tuning"]
+    assert runtime.aec_max_delay_ms == pyi["aec_max_delay_ms"]