diff --git a/src/debugger/TIADebug.cxx b/src/debugger/TIADebug.cxx
index 11d96c073..c5561bf53 100644
--- a/src/debugger/TIADebug.cxx
+++ b/src/debugger/TIADebug.cxx
@@ -1007,20 +1007,33 @@ string TIADebug::colorSwatch(uInt8 c) const
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-// FIXME - how does this work; is this even needed ??
-//         convert to stringstream, get rid of snprintf
-string TIADebug::audFreq(uInt8 div)
+string TIADebug::audFreq0()
 {
-  string ret;
-  std::array<char, 10> buf;
+  return audFreq(audC0(), audF0());
+}
 
-  double hz = 31400.0;
-  if(div) hz /= div;
-  std::snprintf(buf.data(), 9, "%5.1f", hz);
-  ret += buf.data();
-  ret += "Hz";
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+string TIADebug::audFreq1()
+{
+  return audFreq(audC1(), audF1());
+}
 
-  return ret;
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+string TIADebug::audFreq(uInt8 dist, uInt8 div)
+{
+  uInt16 dist_div[16] = {
+      1, 15, 465, 465, 2, 2, 31, 31,
+    511, 31,  31,   1, 6, 6, 93, 93
+  };
+  const double hz =
+    (myConsole.timing() == ConsoleTiming::ntsc ? 31440.0 : 31200.0)
+    / dist_div[dist] / (div + 1);
+  ostringstream buf;
+
+  buf.setf(std::ios_base::fixed, std::ios_base::floatfield);
+  buf << std::setw(7) << std::setprecision(1) << hz << "Hz";
+
+  return buf.str();
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -1302,7 +1315,7 @@ string TIADebug::toString()
       << "AUDF0: "
       << hexWithLabel("", int(audF0()),
                       state.aud[0] != oldState.aud[0]) << "/"
-      << std::setw(11) << std::right << stringOnly(audFreq(audF0()),
+      << std::setw(11) << std::right << stringOnly(audFreq0(),
                     state.aud[0] != oldState.aud[0]) << " "
       << "AUDC0: "
       << hexWithLabel("", int(audC0()),
@@ -1314,7 +1327,7 @@ string TIADebug::toString()
       << "AUDF1: "
       << hexWithLabel("", int(audF1()),
                       state.aud[1] != oldState.aud[1]) << "/"
-      << std::setw(11) << std::right << stringOnly(audFreq(audF1()),
+      << std::setw(11) << std::right << stringOnly(audFreq1(),
                     state.aud[1] != oldState.aud[1]) << " "
       << "AUDC1: "
       << hexWithLabel("", int(audC1()),
diff --git a/src/debugger/TIADebug.hxx b/src/debugger/TIADebug.hxx
index e2e85c073..cf167aeb5 100644
--- a/src/debugger/TIADebug.hxx
+++ b/src/debugger/TIADebug.hxx
@@ -106,6 +106,8 @@ class TIADebug : public DebuggerSystem
     uInt8 audF1(int newVal = -1);
     uInt8 audV0(int newVal = -1);
     uInt8 audV1(int newVal = -1);
+    string audFreq0();
+    string audFreq1();
 
     void setGRP0Old(uInt8 b);
     void setGRP1Old(uInt8 b);
@@ -185,7 +187,7 @@ class TIADebug : public DebuggerSystem
     /** Display a color patch for color at given index in the palette */
     string colorSwatch(uInt8 c) const;
 
-    string audFreq(uInt8 div);
+    string audFreq(uInt8 dist, uInt8 div);
     string stringOnly(string value, bool changed = false);
     string decWithLabel(string label, uInt16 value, bool changed = false, uInt16 width = 3);
     string hexWithLabel(string label, uInt16 value, bool changed = false, uInt16 width = 2);
diff --git a/src/debugger/gui/AudioWidget.cxx b/src/debugger/gui/AudioWidget.cxx
index f548f8082..0a26348e0 100644
--- a/src/debugger/gui/AudioWidget.cxx
+++ b/src/debugger/gui/AudioWidget.cxx
@@ -49,6 +49,12 @@ AudioWidget::AudioWidget(GuiObject* boss, const GUI::Font& lfont,
   myAudF->setTarget(this);
   myAudF->setID(kAUDFID);
   addFocusWidget(myAudF);
+  myAud0F = new StaticTextWidget(boss, lfont,
+    myAudF->getRight() + fontWidth, ypos + (lineHeight + 5)/ 2 + 2, "         ");
+  new StaticTextWidget(boss, lfont,
+    myAud0F->getRight(), ypos + (lineHeight + 5)/ 2 + 2, "/");
+  myAud1F = new StaticTextWidget(boss, lfont,
+    myAud0F->getRight() + fontWidth, ypos + (lineHeight + 5)/ 2 + 2, "         ");
 
   for(int col = 0; col < 2; ++col)
   {
@@ -57,7 +63,6 @@ AudioWidget::AudioWidget(GuiObject* boss, const GUI::Font& lfont,
                          Common::Base::toString(col, Common::Base::Fmt::_16_1),
                          TextAlign::Left);
   }
-
   // AudC registers
   xpos = 10;  ypos += lineHeight + 5;
   new StaticTextWidget(boss, lfont, xpos, ypos+2, lwidth, fontHeight,
@@ -80,7 +85,8 @@ AudioWidget::AudioWidget(GuiObject* boss, const GUI::Font& lfont,
   myAudV->setID(kAUDVID);
   addFocusWidget(myAudV);
 
-  myAudEffV = new StaticTextWidget(boss, lfont, myAudV->getRight() + fontWidth, myAudV->getTop() + 2,
+  myAudEffV = new StaticTextWidget(boss, lfont,
+                                   myAudV->getRight() + fontWidth * 2, myAudV->getTop() + 2,
                                    "100% (eff. volume)");
 
   setHelpAnchor("AudioTab", true);
@@ -128,9 +134,18 @@ void AudioWidget::loadConfig()
   }
   myAudV->setList(alist, vlist, changed);
 
+  handleFrequencies();
   handleVolume();
 }
 
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void AudioWidget::handleFrequencies()
+{
+  myAud0F->setLabel(instance().debugger().tiaDebug().audFreq0());
+  myAud1F->setLabel(instance().debugger().tiaDebug().audFreq1());
+}
+
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void AudioWidget::handleVolume()
 {
@@ -185,6 +200,7 @@ void AudioWidget::changeFrequencyRegs()
     default:
       break;
   }
+  handleFrequencies();
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -206,6 +222,7 @@ void AudioWidget::changeControlRegs()
     default:
       break;
   }
+  handleFrequencies();
   handleVolume();
 }
 
diff --git a/src/debugger/gui/AudioWidget.hxx b/src/debugger/gui/AudioWidget.hxx
index ac0a34324..07b7431a7 100644
--- a/src/debugger/gui/AudioWidget.hxx
+++ b/src/debugger/gui/AudioWidget.hxx
@@ -40,9 +40,11 @@ class AudioWidget : public Widget, public CommandSender
       kAUDVID
     };
 
-    DataGridWidget* myAudF{nullptr};
-    DataGridWidget* myAudC{nullptr};
-    DataGridWidget* myAudV{nullptr};
+    DataGridWidget*   myAudF{nullptr};
+    StaticTextWidget* myAud0F{nullptr};
+    StaticTextWidget* myAud1F{nullptr};
+    DataGridWidget*   myAudC{nullptr};
+    DataGridWidget*   myAudV{nullptr};
     StaticTextWidget* myAudEffV{nullptr};
 
     // Audio channels
@@ -59,6 +61,7 @@ class AudioWidget : public Widget, public CommandSender
     void handleCommand(CommandSender* sender, int cmd, int data, int id) override;
     void loadConfig() override;
 
+    void handleFrequencies();
     void handleVolume();
     uInt32 getEffectiveVolume();