diff --git a/app/src/main/java/eu/darken/capod/main/ui/devicesettings/DeviceSettingsScreen.kt b/app/src/main/java/eu/darken/capod/main/ui/devicesettings/DeviceSettingsScreen.kt
index a5674928..93932e40 100644
--- a/app/src/main/java/eu/darken/capod/main/ui/devicesettings/DeviceSettingsScreen.kt
+++ b/app/src/main/java/eu/darken/capod/main/ui/devicesettings/DeviceSettingsScreen.kt
@@ -477,6 +477,7 @@ fun DeviceSettingsScreen(
                                     level = adaptiveNoise.level,
                                     onLevelChange = onAdaptiveAudioNoiseChange,
                                     enabled = enabled,
+                                    isAdaptiveMode = ancMode.current == AapSetting.AncMode.Value.ADAPTIVE,
                                 )
                             }
                             if (features.hasNcOneAirpod && ncOneAirpod != null) {
@@ -722,18 +723,24 @@ private fun AdaptiveNoiseSlider(
     level: Int,
     onLevelChange: (Int) -> Unit,
     enabled: Boolean,
+    isAdaptiveMode: Boolean,
 ) {
     var sliderValue by remember(level) { mutableIntStateOf(level) }
+    val subtitleRes = if (isAdaptiveMode) {
+        R.string.device_settings_adaptive_noise_description
+    } else {
+        R.string.device_settings_adaptive_noise_requires_adaptive
+    }
     SettingsSliderItem(
         icon = Icons.TwoTone.GraphicEq,
         title = stringResource(R.string.device_settings_adaptive_noise_label),
-        subtitle = stringResource(R.string.device_settings_adaptive_noise_description),
+        subtitle = stringResource(subtitleRes),
         value = sliderValue.toFloat(),
         onValueChange = { sliderValue = it.toInt() },
         onValueChangeFinished = { onLevelChange(sliderValue) },
         valueRange = 0f..100f,
         steps = 99,
-        enabled = enabled,
+        enabled = enabled && isAdaptiveMode,
         valueLabel = { "${it.toInt()}%" },
     )
 }
diff --git a/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/AapSetting.kt b/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/AapSetting.kt
index e81d328a..d1c49160 100644
--- a/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/AapSetting.kt
+++ b/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/AapSetting.kt
@@ -93,6 +93,8 @@ sealed class AapSetting {
         val enabled: Boolean,
     ) : AapSetting()
 
+    // UI-space 0..100 (100 = max noise reduction). Wire value is inverted — conversion lives in
+    // the device profile. Pro 3 silently accepts writes (no echo) but the value persists.
     data class AdaptiveAudioNoise(
         val level: Int,
     ) : AapSetting()
diff --git a/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/DefaultAapDeviceProfile.kt b/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/DefaultAapDeviceProfile.kt
index af2a25ce..cbeb325c 100644
--- a/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/DefaultAapDeviceProfile.kt
+++ b/app/src/main/java/eu/darken/capod/pods/core/apple/aap/protocol/DefaultAapDeviceProfile.kt
@@ -86,7 +86,7 @@ class DefaultAapDeviceProfile(
     override fun encodeInitExt(): ByteArray? {
         if (!model.features.needsInitExt) return null
         return byteArrayOf(
-            0x04, 0x00, 0x04, 0x00, 0x4d, 0x00, 0x0e, 0x00,
+            0x04, 0x00, 0x04, 0x00, 0x4d, 0x00, 0xd7.toByte(), 0x00,
             0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         )
     }
@@ -101,7 +101,9 @@ class DefaultAapDeviceProfile(
         is AapCommand.SetVolumeSwipeLength -> buildSettingsMessage(SETTING_VOLUME_SWIPE_LENGTH, command.value.wireValue)
         is AapCommand.SetVolumeSwipe -> buildSettingsMessage(SETTING_VOLUME_SWIPE, encodeAppleBool(command.enabled))
         is AapCommand.SetPersonalizedVolume -> buildSettingsMessage(SETTING_PERSONALIZED_VOLUME, encodeAppleBool(command.enabled))
-        is AapCommand.SetAdaptiveAudioNoise -> buildSettingsMessage(SETTING_ADAPTIVE_AUDIO_NOISE, command.level.coerceIn(0, 100))
+        // Wire semantics are inverted: wire 0 = max noise reduction, wire 100 = min (transparency-like).
+        // UI value 0..100 follows user intuition (100 = max NC), so flip on write/read.
+        is AapCommand.SetAdaptiveAudioNoise -> buildSettingsMessage(SETTING_ADAPTIVE_AUDIO_NOISE, 100 - command.level.coerceIn(0, 100))
         is AapCommand.SetEndCallMuteMic -> buildEndCallMuteMicMessage(command.muteMic, command.endCall)
         is AapCommand.SetMicrophoneMode -> buildSettingsMessage(SETTING_MICROPHONE_MODE, command.mode.wireValue)
         is AapCommand.SetEarDetectionEnabled -> buildSettingsMessage(SETTING_EAR_DETECTION_ENABLED, encodeAppleBool(command.enabled))
@@ -242,7 +244,7 @@ class DefaultAapDeviceProfile(
                 AapSetting.PersonalizedVolume::class to AapSetting.PersonalizedVolume(enabled)
             }
             SETTING_ADAPTIVE_AUDIO_NOISE -> {
-                AapSetting.AdaptiveAudioNoise::class to AapSetting.AdaptiveAudioNoise(level = value)
+                AapSetting.AdaptiveAudioNoise::class to AapSetting.AdaptiveAudioNoise(level = 100 - value.coerceIn(0, 100))
             }
             SETTING_MICROPHONE_MODE -> {
                 val mode = AapSetting.MicrophoneMode.Mode.fromWire(value) ?: return null
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 11baee98..ac3fbcb1 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -453,6 +453,7 @@
     <string name="device_settings_tone_volume_description">Volume of confirmation sounds and ringtones</string>
     <string name="device_settings_adaptive_noise_label">Adaptive Audio Noise</string>
     <string name="device_settings_adaptive_noise_description">How much environmental noise is allowed through</string>
+    <string name="device_settings_adaptive_noise_requires_adaptive">Requires Adaptive noise control</string>
     <string name="device_settings_press_speed_label">Press Speed</string>
     <string name="device_settings_press_speed_description">How quickly you need to press for multi-press gestures</string>
     <string name="device_settings_press_speed_default">Default</string>
diff --git a/app/src/test/java/eu/darken/capod/pods/core/apple/aap/devices/DefaultAapDeviceProfileTest.kt b/app/src/test/java/eu/darken/capod/pods/core/apple/aap/devices/DefaultAapDeviceProfileTest.kt
index 405079ae..e34d8008 100644
--- a/app/src/test/java/eu/darken/capod/pods/core/apple/aap/devices/DefaultAapDeviceProfileTest.kt
+++ b/app/src/test/java/eu/darken/capod/pods/core/apple/aap/devices/DefaultAapDeviceProfileTest.kt
@@ -252,10 +252,17 @@ class DefaultAapDeviceProfileTest : BaseAapSessionTest() {
 
     @Nested
     inner class AdaptiveAudioNoiseTests {
+        // UI level is inverted on the wire: UI 0 = max NC → wire 100, UI 100 = min NC → wire 0.
         @Test fun `encode level 50`() { profile.encodeCommand(AapCommand.SetAdaptiveAudioNoise(50))[7] shouldBe 50.toByte() }
-        @Test fun `encode clamps to 0`() { profile.encodeCommand(AapCommand.SetAdaptiveAudioNoise(-5))[7] shouldBe 0x00.toByte() }
-        @Test fun `encode clamps to 100`() { profile.encodeCommand(AapCommand.SetAdaptiveAudioNoise(150))[7] shouldBe 0x64.toByte() }
-        @Test fun `decode level`() { decodeSetting<AapSetting.AdaptiveAudioNoise>(settingsMessage(0x2E, 64)).level shouldBe 64 }
+        @Test fun `encode clamps to 0`() { profile.encodeCommand(AapCommand.SetAdaptiveAudioNoise(-5))[7] shouldBe 0x64.toByte() }
+        @Test fun `encode clamps to 100`() { profile.encodeCommand(AapCommand.SetAdaptiveAudioNoise(150))[7] shouldBe 0x00.toByte() }
+        @Test fun `decode level`() { decodeSetting<AapSetting.AdaptiveAudioNoise>(settingsMessage(0x2E, 64)).level shouldBe 36 }
+        @Test fun `encode decode round-trip`() {
+            for (ui in listOf(0, 25, 50, 75, 100)) {
+                val encoded = profile.encodeCommand(AapCommand.SetAdaptiveAudioNoise(ui))
+                decodeSetting<AapSetting.AdaptiveAudioNoise>(AapMessage.Companion.parse(encoded)!!).level shouldBe ui
+            }
+        }
     }
 
     // ── EndCall / MuteMic ────────────────────────────────────