diff --git a/devices/ioctrl/heathrow.cpp b/devices/ioctrl/heathrow.cpp
index aa2ace8..bacc99c 100644
--- a/devices/ioctrl/heathrow.cpp
+++ b/devices/ioctrl/heathrow.cpp
@@ -69,7 +69,7 @@ HeathrowIC::HeathrowIC() : PCIDevice("mac-io/heathrow"), InterruptCtrl()
 
     // find appropriate sound chip, create a DMA output channel for sound,
     // then wire everything together
-    this->snd_codec   = dynamic_cast<MacioSndCtrl*>(gMachineObj->get_comp_by_type(HWCompType::SND_CODEC));
+    this->snd_codec   = dynamic_cast<MacioSndCodec*>(gMachineObj->get_comp_by_type(HWCompType::SND_CODEC));
     this->snd_out_dma = std::unique_ptr<DMAChannel> (new DMAChannel());
     this->snd_codec->set_dma_out(this->snd_out_dma.get());
     this->snd_out_dma->set_callbacks(
diff --git a/devices/ioctrl/macio.h b/devices/ioctrl/macio.h
index a19ef82..6cdf3a3 100644
--- a/devices/ioctrl/macio.h
+++ b/devices/ioctrl/macio.h
@@ -269,7 +269,7 @@ private:
     uint8_t  emmo_pin;      // factory tester status, active low
 
     // subdevice objects
-    MacioSndCtrl*       snd_codec; // audio codec instance
+    MacioSndCodec*      snd_codec; // audio codec instance
 
     NVram*              nvram;    // NVRAM
     ViaCuda*            viacuda;  // VIA cell with Cuda MCU attached to it
diff --git a/devices/sound/awacs.cpp b/devices/sound/awacs.cpp
index be38ea3..241fc50 100644
--- a/devices/sound/awacs.cpp
+++ b/devices/sound/awacs.cpp
@@ -123,7 +123,7 @@ void AwacDevicePdm::write_ctrl(uint32_t addr, uint16_t value)
 }
 
 //============================= Screamer AWACs ================================
-AwacsScreamer::AwacsScreamer(std::string name) : AwacsBase(name)
+AwacsScreamer::AwacsScreamer(std::string name) : MacioSndCodec(name)
 {
     static int screamer_freqs[8] = {
         44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
diff --git a/devices/sound/awacs.h b/devices/sound/awacs.h
index e0de8b7..457ea72 100644
--- a/devices/sound/awacs.h
+++ b/devices/sound/awacs.h
@@ -141,8 +141,9 @@ private:
 };
 
 /** Sound codec interface with the typical MacIO access. */
-class MacioSndCtrl : public virtual AwacsBase {
+class MacioSndCodec : public AwacsBase {
 public:
+    MacioSndCodec(std::string name) : AwacsBase(name) {};
     virtual uint32_t snd_ctrl_read(uint32_t offset, int size) = 0;
     virtual void     snd_ctrl_write(uint32_t offset, uint32_t value, int size) = 0;
 };
@@ -152,7 +153,7 @@ public:
 #define AWAC_REV_SCREAMER   3
 
 /** Screamer sound codec. */
-class AwacsScreamer : public MacioSndCtrl {
+class AwacsScreamer : public MacioSndCodec {
 public:
     AwacsScreamer(std::string name = "Screamer");
     ~AwacsScreamer() = default;
diff --git a/devices/sound/burgundy.cpp b/devices/sound/burgundy.cpp
index 51aabad..3edac7c 100644
--- a/devices/sound/burgundy.cpp
+++ b/devices/sound/burgundy.cpp
@@ -29,7 +29,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include <loguru.hpp>
 #include <memaccess.h>
 
-BurgundyCodec::BurgundyCodec(std::string name) : AwacsBase(name)
+BurgundyCodec::BurgundyCodec(std::string name) : MacioSndCodec(name)
 {
     supports_types(HWCompType::SND_CODEC);
 
diff --git a/devices/sound/burgundy.h b/devices/sound/burgundy.h
index 0be9346..60a8cf3 100644
--- a/devices/sound/burgundy.h
+++ b/devices/sound/burgundy.h
@@ -38,7 +38,7 @@ enum {
 /** Number of internal registers implemented in Burgundy. */
 #define BURGUNDY_NUM_REGS   123
 
-class BurgundyCodec : public MacioSndCtrl {
+class BurgundyCodec : public MacioSndCodec {
 public:
     BurgundyCodec(std::string name);
     ~BurgundyCodec() = default;