diff --git a/src/net/torvald/terrarum/App.java b/src/net/torvald/terrarum/App.java
index bf5352359..79324bf6b 100644
--- a/src/net/torvald/terrarum/App.java
+++ b/src/net/torvald/terrarum/App.java
@@ -37,6 +37,7 @@ import net.torvald.terrarum.langpack.Lang;
 import net.torvald.terrarum.modulebasegame.IngameRenderer;
 import net.torvald.terrarum.modulebasegame.TerrarumIngame;
 import net.torvald.terrarum.modulebasegame.ui.ItemSlotImageFactory;
+import net.torvald.terrarum.modulebasegame.ui.UISoundControlPanel;
 import net.torvald.terrarum.serialise.WriteConfig;
 import net.torvald.terrarum.ui.BlurMgr;
 import net.torvald.terrarum.ui.Toolkit;
@@ -1268,6 +1269,7 @@ public class App implements ApplicationListener {
 
         audioBufferSize = getConfigInt("audio_buffer_size");
         audioMixer = new AudioMixer();
+        UISoundControlPanel.Companion.setupCompRatioByCurrentConfig();
         audioMixerInitialised = true;
         audioManagerThread = new Thread(new AudioManagerRunnable(audioMixer), "TerrarumAudioManager");
         audioManagerThread.setPriority(MAX_PRIORITY); // higher = more predictable; audio delay is very noticeable so it gets high priority
diff --git a/src/net/torvald/terrarum/modulebasegame/gameworld/GamePostalService.kt b/src/net/torvald/terrarum/modulebasegame/gameworld/GamePostalService.kt
index 345d8bd26..7b1bb0db3 100644
--- a/src/net/torvald/terrarum/modulebasegame/gameworld/GamePostalService.kt
+++ b/src/net/torvald/terrarum/modulebasegame/gameworld/GamePostalService.kt
@@ -56,7 +56,7 @@ data class Post(
     val postContents: PostContents,
     val parcel: FixtureInventory?,
 ) {
-    @Transient val basePostage = GamePostalService.calculateBasePostage(this)
+    @Transient val postage = GamePostalService.calculateBasePostage(this).coerceAtLeast(1)
 }
 
 data class PostContents(
diff --git a/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt b/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt
index 76e101d5c..67f9db44a 100644
--- a/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt
+++ b/src/net/torvald/terrarum/modulebasegame/ui/UISoundControlPanel.kt
@@ -32,11 +32,11 @@ class UISoundControlPanel(remoCon: UIRemoCon?) : UICanvas() {
                 arrayOf("", { "" }, "pp"),
                 arrayOf("guivolume", { Lang["MENU_LABEL_INTERFACE", true] }, "sliderd,0,1"),
                 arrayOf("", { "" }, "pp"),
+                arrayOf("audio_dsp_compressor_ratio", { Lang["MENU_OPTIONS_AUDIO_COMP", true] }, "textsel,none=MENU_OPTIONS_DISABLE,light=MENU_OPTIONS_LIGHT,heavy=MENU_OPTIONS_STRONG"),
             arrayOf("", { Lang["MENU_LABEL_AUDIO_ENGINE", true] }, "h1"),
                 arrayOf("audio_speaker_setup", { Lang["MENU_OPTIONS_SPEAKER_SETUP", true] }, "textsel,headphone=MENU_OPTIONS_SPEAKER_HEADPHONE,stereo=MENU_OPTIONS_SPEAKER_STEREO"),
                 arrayOf("audio_buffer_size", { Lang["MENU_OPTIONS_AUDIO_BUFFER_SIZE", true] }, "spinnersel,128,256,512,1024,2048"),
                 arrayOf("", { "${Lang["MENU_LABEL_AUDIO_BUFFER_INSTRUCTION"]}" }, "p"),
-                //arrayOf("audio_dsp_compressor_ratio", { Lang["MENU_OPTIONS_AUDIO_COMP", true] }, "textsel,none=MENU_OPTIONS_DISABLE,light=MENU_OPTIONS_LIGHT,heavy=MENU_OPTIONS_STRONG")
 
         ))
     }
@@ -44,7 +44,7 @@ class UISoundControlPanel(remoCon: UIRemoCon?) : UICanvas() {
     private val compDict = mapOf(
         "none" to 1f,
         "light" to 1.8f,
-        "heavy" to 5.4f
+        "heavy" to 5.0f
     )
 
     override var height = ControlPanelCommon.getMenuHeight("basegame.soundcontrolpanel")
@@ -86,4 +86,18 @@ class UISoundControlPanel(remoCon: UIRemoCon?) : UICanvas() {
     override fun dispose() {
     }
 
+    companion object {
+        private val compDict = mapOf(
+            "none" to 1f,
+            "light" to 1.8f,
+            "heavy" to 5.0f
+        )
+
+        fun setupCompRatioByCurrentConfig() {
+            App.getConfigString("audio_dsp_compressor_ratio").let {
+                App.audioMixer.masterTrack.getFilter<Comp>().ratio = compDict[it] ?: 1f
+            }
+        }
+    }
+
 }
\ No newline at end of file