diff --git a/src/gui/gui.h b/src/gui/gui.h
index dd3a02af5..e20656f7a 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -1028,7 +1028,7 @@ class FurnaceGUI {
   String workingDirVGMExport, workingDirZSMExport, workingDirROMExport, workingDirFont, workingDirColors, workingDirKeybinds;
   String workingDirLayout, workingDirROM, workingDirTest;
   String mmlString[32];
-  String mmlStringW;
+  String mmlStringW, mmlStringSNES;
 
   std::vector<DivSystem> sysSearchResults;
   std::vector<FurnaceGUISysDef> newSongSearchResults;
diff --git a/src/gui/sysConf.cpp b/src/gui/sysConf.cpp
index c77df05ec..1b793a2fb 100644
--- a/src/gui/sysConf.cpp
+++ b/src/gui/sysConf.cpp
@@ -18,7 +18,7 @@
  */
 
 #include "gui.h"
-#include <imgui.h>
+#include "misc/cpp/imgui_stdlib.h"
 
 bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool modifyOnChange) {
   bool altered=false;
@@ -1273,6 +1273,19 @@ bool FurnaceGUI::drawSysConf(int chan, DivSystem type, DivConfig& flags, bool mo
         } rightClickable
       }
 
+      ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x); // wavetable text input size found here
+      if (ImGui::InputText("##MMLWave",&mmlStringSNES)) {
+        int actualData[256];
+        int discardIt=0;
+        memset(actualData,0,256*sizeof(int));
+        decodeMMLStrW(mmlStringSNES,actualData,discardIt,-128,127,false);
+        memcpy(echoFilter,actualData,8*sizeof(int));
+        altered=true;
+      }
+      if (!ImGui::IsItemActive()) {
+        encodeMMLStr(mmlStringSNES,echoFilter,8,-1,-1,false);
+      }
+
       if (altered) {
         e->lockSave([&]() {
           flags.set("volScaleL",127-vsL);