diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11db3319..1c4ae495 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ if(DEFINED ENV{VCPKG_ROOT} AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
 endif()
 
 
-project ("sdl2-hyper-sonic-drivers" VERSION 0.14.0 DESCRIPTION "SDL2 based Hyper-Sonic Drivers for emulating old soundcards")
+project ("sdl2-hyper-sonic-drivers" VERSION 0.13.0 DESCRIPTION "SDL2 based Hyper-Sonic Drivers for emulating old soundcards")
 include (TestBigEndian)
 TEST_BIG_ENDIAN(IS_BIG_ENDIAN)
 if(IS_BIG_ENDIAN)
diff --git a/sdl2-hyper-sonic-drivers/CMakeLists.txt b/sdl2-hyper-sonic-drivers/CMakeLists.txt
index 2854e4d6..692571eb 100644
--- a/sdl2-hyper-sonic-drivers/CMakeLists.txt
+++ b/sdl2-hyper-sonic-drivers/CMakeLists.txt
@@ -75,9 +75,9 @@ target_include_directories(${LIB_NAME} PUBLIC
 target_sources(${LIB_NAME} PRIVATE
     # --- #
     ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/IMixer.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/Renderer.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/mixer/Channel.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/sdl2/Mixer.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/sdl2/Renderer.cpp
     # --- #
     ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/MIDI.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/HyperSonicDrivers/audio/midi/MIDITrack.cpp
diff --git a/sdl2-hyper-sonic-drivers/sdl2-hyper-sonic-drivers.cpp b/sdl2-hyper-sonic-drivers/sdl2-hyper-sonic-drivers.cpp
index 18f6276c..87c1aab1 100644
--- a/sdl2-hyper-sonic-drivers/sdl2-hyper-sonic-drivers.cpp
+++ b/sdl2-hyper-sonic-drivers/sdl2-hyper-sonic-drivers.cpp
@@ -28,7 +28,7 @@
 #include <HyperSonicDrivers/audio/sdl2/Mixer.hpp>
 #include <HyperSonicDrivers/utils/sdl2/Logger.hpp>
 #include <HyperSonicDrivers/devices/Adlib.hpp>
-#include <HyperSonicDrivers/audio/Renderer.hpp>
+#include <HyperSonicDrivers/audio/sdl2/Renderer.hpp>
 #include <mt32emu/c_interface/cpp_interface.h>
 #include <HyperSonicDrivers/hardware/mt32/MT32.hpp>
 
diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/IRenderer.hpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/IRenderer.hpp
new file mode 100644
index 00000000..c47b346e
--- /dev/null
+++ b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/IRenderer.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <filesystem>
+#include <memory>
+#include <HyperSonicDrivers/audio/IMixer.hpp>
+#include <HyperSonicDrivers/audio/IAudioStream.hpp>
+#include <HyperSonicDrivers/hardware/opl/OPL.hpp>
+#include <HyperSonicDrivers/devices/IDevice.hpp>
+
+namespace HyperSonicDrivers::audio
+{
+    class IRenderer
+    {
+    public:
+        IRenderer() = default;
+        virtual ~IRenderer() = default;
+
+        virtual void openOutputFile(const std::filesystem::path& path) = 0;
+        virtual void closeOutputFile() noexcept = 0;
+
+        inline std::shared_ptr<IMixer> getMixer() const noexcept { return m_mixer; };
+
+        virtual void renderBuffer(IAudioStream* stream) = 0;
+        inline void renderBuffer(const std::shared_ptr<devices::IDevice>& device) { renderBuffer(device->getHardware()->getAudioStream().get()); };
+
+    protected:
+        std::shared_ptr<IMixer> m_mixer;
+    };
+}
diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/Renderer.hpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/Renderer.hpp
deleted file mode 100644
index e3836a59..00000000
--- a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/Renderer.hpp
+++ /dev/null
@@ -1,33 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <filesystem>
-#include <memory>
-#include <vector>
-#include <HyperSonicDrivers/audio/IMixer.hpp>
-#include <HyperSonicDrivers/audio/IAudioStream.hpp>
-#include <HyperSonicDrivers/devices/Opl.hpp>
-#include <HyperSonicDrivers/files/WAVFile.hpp>
-#include <HyperSonicDrivers/hardware/opl/OPL.hpp>
-
-namespace HyperSonicDrivers::audio
-{
-    class Renderer
-    {
-    public:
-        explicit Renderer(const size_t buffer_size);
-        virtual ~Renderer() = default;
-
-        void openOutputFile(const std::filesystem::path& path);
-        void closeOutputFile() noexcept;
-
-        void renderBuffer(IAudioStream* stream);
-
-        inline void renderBuffer(const std::shared_ptr<devices::IDevice>& device) { renderBuffer(device->getHardware()->getAudioStream().get()); };
-
-    private:
-        const size_t m_buf_size;
-        std::unique_ptr<files::WAVFile> m_out;
-        std::vector<int16_t> m_buf;
-    };
-}
diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/Renderer.cpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/sdl2/Renderer.cpp
similarity index 62%
rename from sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/Renderer.cpp
rename to sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/sdl2/Renderer.cpp
index 2157f620..7f27958d 100644
--- a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/Renderer.cpp
+++ b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/sdl2/Renderer.cpp
@@ -1,10 +1,13 @@
-#include <HyperSonicDrivers/audio/Renderer.hpp>
-#include <HyperSonicDrivers/audio/mixer/ChannelGroup.hpp>
+#include <HyperSonicDrivers/audio/sdl2/Renderer.hpp>
+#include <HyperSonicDrivers/audio/sdl2/Mixer.hpp>
+#include <HyperSonicDrivers/utils/ILogger.hpp>
 
-namespace HyperSonicDrivers::audio
+
+namespace HyperSonicDrivers::audio::sdl2
 {
-    Renderer::Renderer(const size_t buffer_size) : m_buf_size(buffer_size)
+    Renderer::Renderer(const uint32_t freq, const uint16_t buffer_size)
     {
+        m_mixer = make_mixer<Mixer>(1, freq, buffer_size);
     }
 
     void Renderer::openOutputFile(const std::filesystem::path& path)
@@ -15,7 +18,6 @@ namespace HyperSonicDrivers::audio
 
     void Renderer::closeOutputFile() noexcept
     {
-        m_out->save_end();
         m_out.reset();
     }
 
@@ -24,7 +26,7 @@ namespace HyperSonicDrivers::audio
         if (m_buf.empty())
         {
             m_out->save_prepare(stream->getRate(), stream->isStereo());
-            m_buf.resize(m_buf_size);
+            m_buf.resize(m_mixer->getBufferSize());
         }
 
         const size_t read = stream->readBuffer(m_buf.data(), m_buf.size());
diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/sdl2/Renderer.hpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/sdl2/Renderer.hpp
new file mode 100644
index 00000000..9774f659
--- /dev/null
+++ b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/audio/sdl2/Renderer.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <HyperSonicDrivers/audio/IRenderer.hpp>
+#include <HyperSonicDrivers/audio/IMixer.hpp>
+#include <HyperSonicDrivers/audio/IAudioStream.hpp>
+#include <HyperSonicDrivers/files/WAVFile.hpp>
+#include <vector>
+#include <memory>
+#include <filesystem>
+
+namespace HyperSonicDrivers::audio::sdl2
+{
+    class Renderer : public IRenderer
+    {
+    public:
+        Renderer(const uint32_t freq, const uint16_t buffer_size);
+        ~Renderer() override = default;
+
+        void openOutputFile(const std::filesystem::path& path) override;
+        void closeOutputFile() noexcept override;
+
+        void renderBuffer(IAudioStream* stream) override;
+        using IRenderer::renderBuffer;
+    private:
+        std::unique_ptr<files::WAVFile> m_out;
+        std::vector<int16_t> m_buf;
+    };
+}
diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/hardware/IHardware.hpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/hardware/IHardware.hpp
index c2cbc8c2..1385ade0 100644
--- a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/hardware/IHardware.hpp
+++ b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/hardware/IHardware.hpp
@@ -10,7 +10,7 @@
 
 namespace HyperSonicDrivers::audio
 {
-    class Renderer;
+    class IRenderer;
 
     namespace streams
     {
@@ -27,7 +27,7 @@ namespace HyperSonicDrivers::hardware
     class IHardware
     {
         friend audio::streams::EmulatedStream;
-        friend audio::Renderer;
+        friend audio::IRenderer;
 
     public:
         explicit IHardware(const std::shared_ptr<audio::IMixer>& mixer);
diff --git a/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/CMakeLists.txt b/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/CMakeLists.txt
index e6ad891b..5873f81a 100644
--- a/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/CMakeLists.txt
+++ b/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/CMakeLists.txt
@@ -262,7 +262,7 @@ macro_test(
 
 macro_test(
     EXE TestRenderer
-    FILES "audio/TestRenderer.cpp"
+    FILES "audio/sdl2/TestRenderer.cpp"
     LINKS_PRIVATE hyper-sonic-drivers-static
     FIXTURES
         "../fixtures/test_renderer_adlib_mame2.wav"
diff --git a/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/audio/TestRenderer.cpp b/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/audio/sdl2/TestRenderer.cpp
similarity index 67%
rename from sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/audio/TestRenderer.cpp
rename to sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/audio/sdl2/TestRenderer.cpp
index 87b1cd8c..47dd27d6 100644
--- a/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/audio/TestRenderer.cpp
+++ b/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/audio/sdl2/TestRenderer.cpp
@@ -1,5 +1,5 @@
 #include <gtest/gtest.h>
-#include <HyperSonicDrivers/audio/Renderer.hpp>
+#include <HyperSonicDrivers/audio/sdl2/Renderer.hpp>
 #include <HyperSonicDrivers/devices/Adlib.hpp>
 #include <HyperSonicDrivers/devices/SbPro2.hpp>
 #include <HyperSonicDrivers/drivers/westwood/ADLDriver.hpp>
@@ -9,7 +9,7 @@
 #include <filesystem>
 #include <string>
 
-namespace HyperSonicDrivers::audio
+namespace HyperSonicDrivers::audio::sdl2
 {
     using audio::mixer::eChannelGroup;
     using hardware::opl::OplEmulator;
@@ -55,7 +55,7 @@ namespace HyperSonicDrivers::audio
         ASSERT_FALSE(std::filesystem::exists(rfile));
 
         {
-            audio::Renderer r(freq);
+            audio::sdl2::Renderer r(freq, 1024);
             r.openOutputFile(rfile);
 
             auto drv1 = drivers::westwood::ADLDriver(opl, eChannelGroup::Music);
@@ -92,50 +92,6 @@ namespace HyperSonicDrivers::audio
             std::make_tuple<>("sbpro2_dosbox", 44100, eDeviceName::SbPro2, OplEmulator::DOS_BOX)
         )
     );
-
-
-    // This disabled test are generating a shorter wav file. WHY?
-    TEST(DISABLED_Renderer, adlib_mame2)
-    {
-        constexpr const char* exp_renderer = "../fixtures/test_renderer_adlib_mame2.wav";
-        constexpr const char* rfile = "test_renderer_adlib_mame2_out.wav";
-
-        if (std::filesystem::exists(rfile))
-            std::filesystem::remove(rfile);
-
-        ASSERT_FALSE(std::filesystem::exists(rfile));
-
-        audio::Renderer r(1024);
-        r.openOutputFile(rfile);
-
-        auto mixer = std::make_shared<stubs::StubMixer>();
-
-        auto adlib = devices::make_device<devices::Adlib, devices::Opl>(mixer, OplEmulator::MAME);
-        auto drv1 = drivers::westwood::ADLDriver(adlib, eChannelGroup::Music);
-        auto af = std::make_shared<files::westwood::ADLFile>("../fixtures/DUNE0.ADL");
-        drv1.setADLFile(af);
-
-        drv1.play(4);
-        while (drv1.isPlaying())
-            r.renderBuffer(adlib);
-
-        r.closeOutputFile();
-
-        files::WAVFile w(rfile);
-        auto sound = w.getSound();
-        files::WAVFile wexp(exp_renderer);
-        auto exp_sound = wexp.getSound();
-
-        ASSERT_EQ(sound->dataSize, exp_sound->dataSize);
-        ASSERT_EQ(sound->freq, exp_sound->freq);
-        ASSERT_EQ(sound->stereo, exp_sound->stereo);
-        EXPECT_EQ(sound->freq, 44100);
-        EXPECT_FALSE(sound->stereo);
-        for (uint32_t i = 0; i < sound->dataSize; i++)
-        {
-            EXPECT_EQ(sound->data[i], exp_sound->data[i]);
-        }
-    }
 }
 
 int main(int argc, char** argv)
diff --git a/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_adlib_mame2.wav b/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_adlib_mame2.wav
index eac53834..1fb2ded8 100644
Binary files a/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_adlib_mame2.wav and b/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_adlib_mame2.wav differ
diff --git a/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_sbpro2_dosbox.wav b/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_sbpro2_dosbox.wav
index 29f033f9..5e642b66 100644
Binary files a/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_sbpro2_dosbox.wav and b/sdl2-hyper-sonic-drivers/test/fixtures/test_renderer_sbpro2_dosbox.wav differ