diff --git a/res/presets/OctaVerb.chowpreset b/res/presets/OctaVerb.chowpreset
index 0c3bafb5..4fd96358 100644
--- a/res/presets/OctaVerb.chowpreset
+++ b/res/presets/OctaVerb.chowpreset
@@ -1,13 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<Preset name="OctaVerb" plugin="BYOD" vendor="CHOW" category="Pedals" version="1.2.2">
-  <proc_chain state_plugin_version="1.2.2">
+<Preset name="OctaVerb" plugin="BYOD" vendor="CHOW" category="Pedals" version="1.3.1">
+  <proc_chain state_plugin_version="1.3.1">
     <Poly_Octave>
       <Parameters x_pos="0.04100000113248825" y_pos="0.505660355091095">
         <PARAM id="dry" value="0.0"/>
         <PARAM id="on_off" value="1.0"/>
         <PARAM id="up2_octave" value="0.5"/>
         <PARAM id="up_octave" value="1.0"/>
+        <PARAM id="v1_mode" value="0.0"/>
       </Parameters>
       <port_0 connection_0="3" connection_end_0="0"/>
     </Poly_Octave>
diff --git a/src/processors/other/poly_octave/PolyOctave.cpp b/src/processors/other/poly_octave/PolyOctave.cpp
index 66027f07..0f5bddfa 100644
--- a/src/processors/other/poly_octave/PolyOctave.cpp
+++ b/src/processors/other/poly_octave/PolyOctave.cpp
@@ -70,8 +70,8 @@ void PolyOctave::prepare (double sampleRate, int samplesPerBlock)
     upOctaveBuffer_double.setMaxSize (2, 2 * samplesPerBlock); // allocate extra space for SIMD
     downOctaveBuffer_double.setMaxSize (2, samplesPerBlock);
 
-    poly_octave_v2::design_filter_bank<poly_octave_v2::N1> (octaveUpFilterBank, 2.0, 5.0, 5.0, sampleRate);
-    poly_octave_v2::design_filter_bank<poly_octave_v2::N1> (octaveUp2FilterBank, 3.0, 7.0, 6.0, sampleRate);
+    poly_octave_v2::design_filter_bank<poly_octave_v2::N1> (octaveUpFilterBank, 2.0, 5.0, 4.5, sampleRate);
+    poly_octave_v2::design_filter_bank<poly_octave_v2::N1> (octaveUp2FilterBank, 3.0, 6.0, 2.75, sampleRate);
     for (auto& shifter : downOctavePitchShifters)
     {
         shifter.prepare (sampleRate);