diff --git a/inc/cabl/devices/Device.h b/inc/cabl/devices/Device.h
index 549a251..9b5877e 100644
--- a/inc/cabl/devices/Device.h
+++ b/inc/cabl/devices/Device.h
@@ -237,6 +237,8 @@ class Device
 
   virtual size_t numOfLedArrays() const = 0;
 
+  virtual size_t currentOctave() const { return 0; }
+
   virtual void setButtonLed(Button, const Color&);
 
   virtual void setKeyLed(unsigned, const Color&);
diff --git a/src/devices/ni/KompleteKontrol.cpp b/src/devices/ni/KompleteKontrol.cpp
index 69caa6e..7932c2c 100644
--- a/src/devices/ni/KompleteKontrol.cpp
+++ b/src/devices/ni/KompleteKontrol.cpp
@@ -246,6 +246,7 @@ enum class KompleteKontrolBase::Button : uint8_t
 KompleteKontrolBase::KompleteKontrolBase()
   : m_isDirtyLeds(true)
   , m_isDirtyKeyLeds(true)
+  , m_hasValidOctave(false)
 #if defined(_WIN32) || defined(__APPLE__) || defined(__linux)
   , m_pMidiOut(new RtMidiOut)
   , m_pMidiIn(new RtMidiIn)
@@ -515,6 +516,7 @@ void KompleteKontrolBase::processButtons(const Transfer& input_)
   }
 
   m_firstOctave = input_.data()[37];
+  m_hasValidOctave = true;
 }
 
 //--------------------------------------------------------------------------------------------------
@@ -692,5 +694,37 @@ void KompleteKontrolBase::midiInCallback(
 
 //--------------------------------------------------------------------------------------------------
 
+template <>
+size_t KompleteKontrolS25::defaultOctave() const
+{
+  return 48;
+}
+
+//--------------------------------------------------------------------------------------------------
+
+template <>
+size_t KompleteKontrolS49::defaultOctave() const
+{
+  return 36;
+}
+
+//--------------------------------------------------------------------------------------------------
+
+template <>
+size_t KompleteKontrolS61::defaultOctave() const
+{
+  return 36;
+}
+
+//--------------------------------------------------------------------------------------------------
+
+template <>
+size_t KompleteKontrolS88::defaultOctave() const
+{
+  return 21;
+}
+
+//--------------------------------------------------------------------------------------------------
+
 } // namespace cabl
 } // namespace sl
diff --git a/src/devices/ni/KompleteKontrol.h b/src/devices/ni/KompleteKontrol.h
index 87c1904..3a2b967 100644
--- a/src/devices/ni/KompleteKontrol.h
+++ b/src/devices/ni/KompleteKontrol.h
@@ -56,6 +56,16 @@ class KompleteKontrolBase : public Device
     return 0;
   }
 
+  size_t currentOctave() const override
+  {
+    return m_hasValidOctave ? m_firstOctave : defaultOctave();
+  }
+
+  virtual size_t defaultOctave() const
+  {
+    assert(false);
+  }
+
   bool tick() override;
 
 private:
@@ -99,6 +109,7 @@ class KompleteKontrolBase : public Device
   bool m_isDirtyKeyLeds;
 
   uint8_t m_firstOctave;
+  bool m_hasValidOctave;
 
   TextDisplayKompleteKontrol m_displays[kKK_nDisplays];
 
@@ -125,6 +136,8 @@ class KompleteKontrol final : public KompleteKontrolBase
     return kKK_keysLedDataSize;
   }
 
+  size_t defaultOctave() const override;
+
 private:
   uint8_t* ledsKeysData() override
   {