diff --git a/src/keyer.cpp b/src/keyer.cpp
index 07e8b6b..68395ed 100644
--- a/src/keyer.cpp
+++ b/src/keyer.cpp
@@ -8,7 +8,9 @@
 extern const uint LED_PIN;
 extern const uint LEFT_PADDLE_PIN;
 extern const uint RIGHT_PADDLE_PIN;
+extern const uint BUZZER_PIN;
 extern const uint CW_OUT_PIN;
+extern const uint AUDIO_OUT_PIN;
 
 const uint SIDETONE_FREQ = 622;
 
@@ -34,7 +36,10 @@ uint64_t calcElementDurationUs(uint8_t wpm)
     return duration;
 }
 
-Keyer::Keyer(uint8_t wpm, Mode mode) : m_wpm(wpm), m_mode(mode) { m_elementDuration = calcElementDurationUs(m_wpm); }
+Keyer::Keyer(uint8_t wpm, Mode mode) : m_wpm(wpm), m_mode(mode), m_buzzer(BUZZER_PIN), m_audioOut(AUDIO_OUT_PIN)
+{
+    m_elementDuration = calcElementDurationUs(m_wpm);
+}
 
 void Keyer::setSpeed(uint8_t wpm)
 {
@@ -71,7 +76,8 @@ void Keyer::run()
             m_keying_until = make_timeout_time_us(m_elementDuration);
             gpio_put(LED_PIN, 1);
             gpio_put(CW_OUT_PIN, 1);
-            m_Sidetone.on(SIDETONE_FREQ);
+            m_buzzer.on(SIDETONE_FREQ);
+            m_audioOut.on(SIDETONE_FREQ);
         } else {
             // If right paddle üressed -> note for Iambic B
             if (right_paddle_pressed() && !m_keyNextIambicB) {
@@ -83,7 +89,8 @@ void Keyer::run()
                 m_currentlyKeying = false;
                 gpio_put(LED_PIN, 0);
                 gpio_put(CW_OUT_PIN, 0);
-                m_Sidetone.off();
+                m_buzzer.off();
+                m_audioOut.off();
                 m_previousState = State::Dit;
                 m_state = State::DitPause;
             }
@@ -95,7 +102,8 @@ void Keyer::run()
             m_keying_until = make_timeout_time_us(m_elementDuration * 3);
             gpio_put(LED_PIN, 1);
             gpio_put(CW_OUT_PIN, 1);
-            m_Sidetone.on(SIDETONE_FREQ);
+            m_buzzer.on(SIDETONE_FREQ);
+            m_audioOut.on(SIDETONE_FREQ);
         } else {
             // If left paddle pressed -> Note for Iambic B
             if (left_paddle_pressed() && !m_keyNextIambicB) {
@@ -107,7 +115,8 @@ void Keyer::run()
                 m_currentlyKeying = false;
                 gpio_put(LED_PIN, 0);
                 gpio_put(CW_OUT_PIN, 0);
-                m_Sidetone.off();
+                m_buzzer.off();
+                m_audioOut.off();
                 m_previousState = State::Dah;
                 m_state = State::DahPause;
             }
@@ -156,7 +165,8 @@ void Keyer::run()
     case State::Abort:
         gpio_put(LED_PIN, 0);
         gpio_put(CW_OUT_PIN, 0);
-        m_Sidetone.off();
+        m_buzzer.off();
+        m_audioOut.off();
         m_keyNextIambicB = false;
         m_currentlyPausing = false;
         m_currentlyKeying = false;
diff --git a/src/keyer.h b/src/keyer.h
index bc71240..d74563f 100644
--- a/src/keyer.h
+++ b/src/keyer.h
@@ -3,8 +3,6 @@
 #include "settings.h"
 #include "sidetone.h"
 
-extern const uint BUZZER_PIN;
-
 class Keyer final
 {
   public:
@@ -33,7 +31,8 @@ class Keyer final
     absolute_time_t m_keying_until{0};
     absolute_time_t m_pausing_until{0};
 
-    Sidetone m_Sidetone{BUZZER_PIN};
+    Sidetone m_buzzer;
+    Sidetone m_audioOut;
 
     State m_state{State::Wait};
     State m_previousState{State::Wait};
diff --git a/src/raspi_keyer.cpp b/src/raspi_keyer.cpp
index d672787..60f1fd7 100644
--- a/src/raspi_keyer.cpp
+++ b/src/raspi_keyer.cpp
@@ -17,6 +17,7 @@ extern const uint LEFT_PADDLE_PIN = 14;
 extern const uint RIGHT_PADDLE_PIN = 15;
 extern const uint BUZZER_PIN = 18;
 extern const uint CW_OUT_PIN = 17;
+extern const uint AUDIO_OUT_PIN = 16;
 
 // Stuff for communicating between cores
 enum class KeyerQueueCommand {
diff --git a/src/sidetone.h b/src/sidetone.h
index 0a2a8b2..ced5273 100644
--- a/src/sidetone.h
+++ b/src/sidetone.h
@@ -3,11 +3,11 @@
 class Sidetone
 {
   public:
+    Sidetone() = delete;
     Sidetone(uint gpio);
     void on(uint freq);
     void off();
 
   private:
-    Sidetone(){};
     uint m_gpio{0};
 };
\ No newline at end of file