diff --git a/server/src/wled_controller/storage/value_source.py b/server/src/wled_controller/storage/value_source.py
index 965c263..84c91bf 100644
--- a/server/src/wled_controller/storage/value_source.py
+++ b/server/src/wled_controller/storage/value_source.py
@@ -91,6 +91,8 @@ class ValueSource:
                 mode=data.get("mode") or "rms",
                 sensitivity=float(data.get("sensitivity") or 1.0),
                 smoothing=float(data.get("smoothing") or 0.3),
+                min_value=float(data.get("min_value") or 0.0),
+                max_value=float(data["max_value"]) if data.get("max_value") is not None else 1.0,
             )
 
         if source_type == "adaptive_time":
@@ -167,10 +169,12 @@ class AudioValueSource(ValueSource):
     into a scalar value for brightness modulation.
     """
 
-    audio_source_id: str = ""    # references a MonoAudioSource
+    audio_source_id: str = ""    # references an audio source (mono or multichannel)
     mode: str = "rms"            # rms | peak | beat
     sensitivity: float = 1.0     # gain multiplier (0.1–5.0)
     smoothing: float = 0.3       # temporal smoothing (0.0–1.0)
+    min_value: float = 0.0       # minimum output (0.0–1.0)
+    max_value: float = 1.0       # maximum output (0.0–1.0)
 
     def to_dict(self) -> dict:
         d = super().to_dict()
@@ -178,6 +182,8 @@ class AudioValueSource(ValueSource):
         d["mode"] = self.mode
         d["sensitivity"] = self.sensitivity
         d["smoothing"] = self.smoothing
+        d["min_value"] = self.min_value
+        d["max_value"] = self.max_value
         return d
 
 
diff --git a/server/src/wled_controller/storage/value_source_store.py b/server/src/wled_controller/storage/value_source_store.py
index 9acb494..bfe44ad 100644
--- a/server/src/wled_controller/storage/value_source_store.py
+++ b/server/src/wled_controller/storage/value_source_store.py
@@ -142,6 +142,8 @@ class ValueSourceStore:
                 mode=mode or "rms",
                 sensitivity=sensitivity if sensitivity is not None else 1.0,
                 smoothing=smoothing if smoothing is not None else 0.3,
+                min_value=min_value if min_value is not None else 0.0,
+                max_value=max_value if max_value is not None else 1.0,
             )
         elif source_type == "adaptive_time":
             schedule_data = schedule or []
@@ -225,6 +227,10 @@ class ValueSourceStore:
                 source.sensitivity = sensitivity
             if smoothing is not None:
                 source.smoothing = smoothing
+            if min_value is not None:
+                source.min_value = min_value
+            if max_value is not None:
+                source.max_value = max_value
         elif isinstance(source, AdaptiveValueSource):
             if schedule is not None:
                 if source.source_type == "adaptive_time" and len(schedule) < 2:
diff --git a/server/src/wled_controller/templates/modals/value-source-editor.html b/server/src/wled_controller/templates/modals/value-source-editor.html
index 2085d2e..195bef9 100644
--- a/server/src/wled_controller/templates/modals/value-source-editor.html
+++ b/server/src/wled_controller/templates/modals/value-source-editor.html
@@ -160,6 +160,32 @@
                             <span id="value-source-smoothing-display">0.3</span>
                         </div>
                     </div>
+
+                    <div class="form-group">
+                        <div class="label-row">
+                            <label for="value-source-audio-min-value" data-i18n="value_source.audio_min_value">Min Value:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?" data-i18n-aria-label="aria.hint">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="value_source.audio_min_value.hint">Output when audio is silent (e.g. 0.3 = 30% brightness floor)</small>
+                        <div class="range-with-value">
+                            <input type="range" id="value-source-audio-min-value" min="0" max="1" step="0.01" value="0"
+                                oninput="document.getElementById('value-source-audio-min-value-display').textContent = this.value">
+                            <span id="value-source-audio-min-value-display">0</span>
+                        </div>
+                    </div>
+
+                    <div class="form-group">
+                        <div class="label-row">
+                            <label for="value-source-audio-max-value" data-i18n="value_source.audio_max_value">Max Value:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?" data-i18n-aria-label="aria.hint">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="value_source.audio_max_value.hint">Output at maximum audio level</small>
+                        <div class="range-with-value">
+                            <input type="range" id="value-source-audio-max-value" min="0" max="1" step="0.01" value="1"
+                                oninput="document.getElementById('value-source-audio-max-value-display').textContent = this.value">
+                            <span id="value-source-audio-max-value-display">1</span>
+                        </div>
+                    </div>
                 </div>
 
                 <!-- Adaptive Time of Day fields -->