diff --git a/src/win/win_snd_gain.c b/src/win/win_snd_gain.c
new file mode 100644
index 000000000..61d3df68d
--- /dev/null
+++ b/src/win/win_snd_gain.c
@@ -0,0 +1,101 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Handle the sound gain dialog.
+ *
+ * Version:	@(#)win_snd_gain.c	1.0.0	2018/01/17
+ *
+ * Authors:	Miran Grca, <mgrca8@gmail.com>
+ *
+ *		Copyright 2016-2018 Miran Grca.
+ */
+#define UNICODE
+#define BITMAP WINDOWS_BITMAP
+#include <windows.h>
+#include <windowsx.h>
+#undef BITMAP
+#include <commctrl.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include "../86box.h"
+#include "../config.h"
+#include "../plat.h"
+#include "../sound/sound.h"
+#include "win.h"
+
+
+static uint8_t	old_gain[3];
+
+
+#ifdef __amd64__
+static LRESULT CALLBACK
+#else
+static BOOL CALLBACK
+#endif
+SoundGainDialogProcedure(HWND hdlg, UINT message, WPARAM wParam, LPARAM lParam)
+{
+    HWND h;
+    int i;
+
+    switch (message) {
+	case WM_INITDIALOG:
+		plat_pause(1);
+		for (i = 0; i < 3; i++) {
+			old_gain[i] = sound_gain[i];
+			h = GetDlgItem(hdlg, IDC_SLIDER_MAIN + i);
+			SendMessage(h, TBM_SETRANGE, (WPARAM)1, (LPARAM)MAKELONG(0, 9));
+			SendMessage(h, TBM_SETPOS, (WPARAM)1, 9 - (sound_gain[i] >> 1));
+			SendMessage(h, TBM_SETTICFREQ, (WPARAM)1, 0);
+			SendMessage(h, TBM_SETLINESIZE, (WPARAM)0, 1);
+			SendMessage(h, TBM_SETPAGESIZE, (WPARAM)0, 2);
+		}
+		break;
+
+	case WM_VSCROLL:
+		for (i = 0; i < 3; i++) {
+			h = GetDlgItem(hdlg, IDC_SLIDER_MAIN + i);
+			sound_gain[i] = (9 - SendMessage(h, TBM_GETPOS, (WPARAM)0, 0)) << 1;
+		}
+		break;
+
+	case WM_COMMAND:
+                switch (LOWORD(wParam)) {
+			case IDOK:
+				for (i = 0; i < 3; i++) {
+					h = GetDlgItem(hdlg, IDC_SLIDER_MAIN + i);
+					sound_gain[i] = (9 - SendMessage(h, TBM_GETPOS, (WPARAM)0, 0)) << 1;
+				}
+				config_save();
+				EndDialog(hdlg, 0);
+				return TRUE;
+
+			case IDCANCEL:
+				for (i = 0; i < 3; i++)
+					sound_gain[i] = old_gain[i];
+				config_save();
+				EndDialog(hdlg, 0);
+				return TRUE;
+
+			default:
+				break;
+		}
+		break;
+    }
+
+    return(FALSE);
+}
+
+
+void
+SoundGainDialogCreate(HWND hwnd)
+{
+    DialogBox(hinstance, (LPCTSTR)DLG_SND_GAIN, hwnd, SoundGainDialogProcedure);
+}