diff --git a/CHANGELOG.md b/CHANGELOG.md
index 322be71..c0e74b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -46,6 +46,9 @@ Recorder.FileType changed from method to write-only property
 - AddAliasMembers meta function takes a hashtable `-MAP` of `alias = property`
 - Strip.Karaoke alias for Strip.K
 - Strip.EQGain1|EQGain2|EQGain3 with bass/low, mid/med, treble/high aliases, respectively
+- StripAudibility class with Strip.Audibility.Knob
+- Strip.Denoiser.Threshold
+- Strip.VAIO
 
 ### Changed
 
@@ -63,6 +66,7 @@ Recorder.FileType changed from method to write-only property
 - Floats getters/setters now default to two decimal places.
 - Strip.Mono is now an alias for Strip.MC on virtual strips
 - Strip.AppMute|AppGain can now take an app index; see README for details
+- Strip Knob setters: explicit $arg types for consistency
 
 ### Fixed
 
@@ -76,6 +80,7 @@ Recorder.FileType changed from method to write-only property
 - Recorder.channel values: 1..8 -> (2, 4, 6, 8)
 - Strip.Limit type [int] -> [float]
 - Missing closing parenthesis in AppMute value string
+- Strip Knob getters: `this.Getter_String('') -> [math]::Round($this.Getter(''), 2)`
 
 ## [3.3.0] - 2024-06-29
 
diff --git a/README.md b/README.md
index 4cb2c73..b83d477 100644
--- a/README.md
+++ b/README.md
@@ -122,6 +122,7 @@ The following strip commands are available:
 - solo: bool
 - A1-A5: bool
 - B1-B3: bool
+- vaio: bool
 - limit: float, from -40.00 to 12.00
 - gain: float, from -60.00 to 12.00
 - label: string
@@ -199,6 +200,7 @@ $vmr.strip[3].gate.threshold = -40.5
 The following strip.denoiser commands are available:
 
 - knob: float, from 0.00 to 10.00
+- threshold: float, from 0.00 to 10.00
 
 for example:
 
@@ -206,6 +208,18 @@ for example:
 $vmr.strip[3].denoiser.knob = 5
 ```
 
+#### audibility
+
+The following strip.audibility commands are available:
+
+- knob: float, from 0.00 to 10.00
+
+for example:
+
+```powershell
+$vmr.strip[1].audibility.knob = 2.66
+```
+
 #### AppGain | AppMute
 
 - AppGain($appname or $appindex, $gain) : string or int, float, from 0.00 to 1.00
diff --git a/lib/strip.ps1 b/lib/strip.ps1
index 965941d..ddbcf8e 100644
--- a/lib/strip.ps1
+++ b/lib/strip.ps1
@@ -77,16 +77,18 @@ class PhysicalStrip : Strip {
     [Object]$denoiser
     [Object]$eq
     [Object]$device
+    [Object]$audibility
 
     PhysicalStrip ([int]$index, [Object]$remote) : base ($index, $remote) {
         AddFloatMembers -PARAMS @('color_x', 'color_y', 'fx_x', 'fx_y')
         AddFloatMembers -PARAMS @('reverb', 'delay', 'fx1', 'fx2')
         AddBoolMembers -PARAMS @('postreverb', 'postdelay', 'postfx1', 'postfx2')
-        AddBoolMembers -PARAMS @('mono')
+        AddBoolMembers -PARAMS @('mono', 'vaio')
 
         $this.comp = [StripComp]::new($index, $remote)
         $this.gate = [StripGate]::new($index, $remote)
         $this.denoiser = [StripDenoiser]::new($index, $remote)
+        $this.audibility = [StripAudibility]::new($index, $remote)
         $this.eq = [StripEq]::new($index, $remote)
         $this.device = [StripDevice]::new($index, $remote)
     }
@@ -104,10 +106,10 @@ class StripComp : IRemote {
 
     hidden $_knob = $($this | Add-Member ScriptProperty 'knob' `
         {
-            $this.Getter_String('')
+            [math]::Round($this.Getter(''), 2)
         } `
         {
-            param($arg)
+            param([single]$arg)
             return $this.Setter('', $arg)
         }
     )
@@ -124,10 +126,10 @@ class StripGate : IRemote {
 
     hidden $_knob = $($this | Add-Member ScriptProperty 'knob' `
         {
-            $this.Getter_String('')
+            [math]::Round($this.Getter(''), 2)
         } `
         {
-            param($arg)
+            param([single]$arg)
             return $this.Setter('', $arg)
         }
     )
@@ -135,6 +137,7 @@ class StripGate : IRemote {
 
 class StripDenoiser : IRemote {
     StripDenoiser ([int]$index, [Object]$remote) : base ($index, $remote) {
+        AddFloatMembers -PARAMS @('threshold')
     }
 
     [string] identifier () {
@@ -143,10 +146,29 @@ class StripDenoiser : IRemote {
 
     hidden $_knob = $($this | Add-Member ScriptProperty 'knob' `
         {
-            $this.Getter_String('')
+            [math]::Round($this.Getter(''), 2)
         } `
         {
-            param($arg)
+            param([single]$arg)
+            return $this.Setter('', $arg)
+        }
+    )
+}
+
+class StripAudibility : IRemote {
+    StripAudibility ([int]$index, [Object]$remote) : base ($index, $remote) {
+    }
+
+    [string] identifier () {
+        return 'Strip[' + $this.index + '].Audibility'
+    }
+
+    hidden $_knob = $($this | Add-Member ScriptProperty 'knob' `
+        {
+            [math]::Round($this.Getter(''), 2)
+        } `
+        {
+            param([single]$arg)
             return $this.Setter('', $arg)
         }
     )
diff --git a/tests/higher.Tests.ps1 b/tests/higher.Tests.ps1
index 7bf8cad..d381d30 100644
--- a/tests/higher.Tests.ps1
+++ b/tests/higher.Tests.ps1
@@ -34,6 +34,11 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
                 $vmr.strip[$index].mono = $value
                 $vmr.strip[$index].mono | Should -Be $expected
             }
+
+            It "Should set Strip[$index].VAIO" {
+                $vmr.strip[$index].vaio = $value
+                $vmr.strip[$index].vaio | Should -Be $expected
+            }
             
             Context 'Eq' -Skip:$ifNotPotato -ForEach @(
                 @{ Eq = $vmr.strip[$index].eq }
@@ -320,6 +325,18 @@ Describe -Tag 'higher', -TestName 'All Higher Tests' {
                     $vmr.strip[$index].denoiser.knob = $knob
                     $vmr.strip[$index].denoiser.knob | Should -Be $knob
                 }
+
+                It "Should set Strip[$index].Denoiser.Threshold" {
+                    $vmr.strip[$index].denoiser.threshold = $knob
+                    $vmr.strip[$index].denoiser.threshold | Should -Be $knob
+                }
+            }
+
+            Context 'Audibility' -Skip:$ifNotBasic {
+                It "Should set Strip[$index].Audibility" {
+                    $vmr.strip[$index].audibility.knob = $knob
+                    $vmr.strip[$index].audibility.knob | Should -Be $knob
+                }
             }
 
             Context 'EQ' -Skip:$ifNotPotato -ForEach @(