diff --git a/app/dl_formats.py b/app/dl_formats.py
index 5640ca4..8618cc4 100644
--- a/app/dl_formats.py
+++ b/app/dl_formats.py
@@ -77,6 +77,12 @@ def get_opts(format: str, quality: str, ytdl_opts: dict) -> dict:
                 "preferredquality": 0 if quality == "best" else quality,
             }
         )
+        
+        # Add voice mono settings for MP3
+        if format == "mp3" and quality == "voice_mono":
+            opts["postprocessor_args"] = {
+                "ffmpeg": ["-ac", "1", "-ar", "22050", "-q:a", "8"]
+            }
 
         # Audio formats without thumbnail
         if format not in ("wav") and "writethumbnail" not in opts:
diff --git a/ui/src/app/formats.ts b/ui/src/app/formats.ts
index 3e79ec1..38df2bf 100644
--- a/ui/src/app/formats.ts
+++ b/ui/src/app/formats.ts
@@ -55,6 +55,7 @@ export const Formats: Format[] = [
       { id: '320', text: '320 kbps' },
       { id: '192', text: '192 kbps' },
       { id: '128', text: '128 kbps' },
+      { id: 'voice_mono', text: 'Voice Mono' },
     ],
   },
   {