diff --git a/play_speaker.py b/play_speaker.py
index 6bc239d..2e2f7c6 100644
--- a/play_speaker.py
+++ b/play_speaker.py
@@ -1,3 +1,4 @@
+import argparse
 import os
 import subprocess
 
@@ -15,8 +16,8 @@ BASE = f"https://{HOST}/proxy/protect/integration/v1"
 PRIVATE_BASE = f"https://{HOST}/proxy/protect/api"
 
 CAMERA_NAME = "G6 Pro 360"
-AUDIO_FILE = "./data/hello.wav"
-SPEAKER_VOLUME = 100  # 0-100
+DEFAULT_AUDIO_FILE = "./data/hello.wav"
+DEFAULT_SPEAKER_VOLUME = 75  # 0-100, above ~85 overdrives the amp
 
 
 def set_speaker_volume(camera_id: str, volume: int):
@@ -48,18 +49,25 @@ def set_speaker_volume(camera_id: str, volume: int):
 
 
 def main():
+    parser = argparse.ArgumentParser(description="Play audio through the G6 Pro 360 speaker")
+    parser.add_argument("file", nargs="?", default=DEFAULT_AUDIO_FILE, help="Audio file to play (default: %(default)s)")
+    parser.add_argument("-v", "--volume", type=int, default=DEFAULT_SPEAKER_VOLUME, metavar="0-100", help="Speaker volume 0-100 (default: %(default)s)")
+    args = parser.parse_args()
+
     with httpx.Client(headers={"X-API-Key": API_KEY}, verify=False) as client:
         cameras = client.get(f"{BASE}/cameras").raise_for_status().json()
         camera = next(c for c in cameras if CAMERA_NAME in c["name"])
         print(f"Camera: {camera['name']} ({camera['id']})")
 
-        set_speaker_volume(camera["id"], SPEAKER_VOLUME)
+        set_speaker_volume(camera["id"], args.volume)
 
         session = client.post(f"{BASE}/cameras/{camera['id']}/talkback-session").raise_for_status().json()
         print(f"Talkback: {session['url']} ({session['codec']} {session['samplingRate']}Hz)")
 
         proc = subprocess.Popen([
-            "ffmpeg", "-re", "-i", AUDIO_FILE,
+            "ffmpeg", "-re", "-i", args.file,
+            "-vn",
+            "-af", "volume=0.8,highpass=f=200,treble=g=-9:f=4000,equalizer=f=1000:width_type=o:width=1:g=3,alimiter=limit=0.8:level=false",
             "-acodec", "libopus",
             "-ar", str(session["samplingRate"]),
             "-ac", "1",