diff --git a/bin/web/js/audio.js b/bin/web/js/audio.js
index 1a4aba7..fe3af98 100644
--- a/bin/web/js/audio.js
+++ b/bin/web/js/audio.js
@@ -319,6 +319,7 @@ const Audio = function(tp, record) {
         source_Dom_Cont.append(muteDom);
         source_Dom_Cont.append(muteDom_label);
 
+        const defaultRange = getDefaultRange(layer, propTitle);
         const min_max_Dom = document.createElement('div');
         min_max_Dom.classList.add('audio_min_max');
         const min_Cont = document.createElement('div');
@@ -330,6 +331,7 @@ const Audio = function(tp, record) {
         min_inputDom.type = 'number';
         min_inputDom.name = toCssClass(`audio_min${propTitle}`);
         min_inputDom.id = toCssClass(`audio_min${propTitle}`);
+        min_inputDom.title = `default: ${defaultRange[0]}`;
         min_inputDom.value = `${mappingOptions.min_out}`;
         const max_Cont = document.createElement('div');
         max_Cont.classList.add('audio_max_Cont');
@@ -340,6 +342,7 @@ const Audio = function(tp, record) {
         max_inputDom.type = 'number';
         max_inputDom.name = toCssClass(`audio_max${propTitle}`);
         max_inputDom.id = toCssClass(`audio_max${propTitle}`);
+        max_inputDom.title = `default: ${defaultRange[1]}`;
         max_inputDom.value = `${mappingOptions.max_out}`;
         const smoothing_inputDom_label = document.createElement('label');
         smoothing_inputDom_label.for = 'audio_smoothing';