diff --git a/src/common/Parameter.cpp b/src/common/Parameter.cpp
index 02585e1ec5e..b88dbfb4f1e 100644
--- a/src/common/Parameter.cpp
+++ b/src/common/Parameter.cpp
@@ -1178,11 +1178,18 @@ void Parameter::set_type(int ctrltype)
         break;
     case ct_ensemble_stages:
     {
+#if defined(_M_ARM64EC)
+        valtype = vt_int;
+        val_min.i = 0;
+        val_max.i = 1;
+        val_default.i = 0;
+#else
         extern int ensemble_stage_count();
         valtype = vt_int;
         val_min.i = 0;
         val_max.i = ensemble_stage_count() - 1;
         val_default.i = 0;
+#endif
         break;
     }
     case ct_stringosc_excitation_model:
@@ -4064,8 +4071,12 @@ std::string Parameter::get_display(bool external, float ef) const
         break;
         case ct_ensemble_stages:
         {
+#if defined(_M_ARM64EC)
+            txt = "name";
+#else
             extern std::string ensemble_stage_name(int);
             txt = ensemble_stage_name(i);
+#endif
         }
         break;
         case ct_reson_mode:
diff --git a/src/common/dsp/Effect.cpp b/src/common/dsp/Effect.cpp
index a8bddbf2898..a93b15d1f8b 100644
--- a/src/common/dsp/Effect.cpp
+++ b/src/common/dsp/Effect.cpp
@@ -20,7 +20,10 @@
  * https://github.com/surge-synthesizer/surge
  */
 
+#if !defined(_M_ARM64EC)
 #include "BBDEnsembleEffect.h"
+#endif
+
 #include "BonsaiEffect.h"
 #include "ChorusEffectImpl.h"
 #include "CombulatorEffect.h"
@@ -105,7 +108,11 @@ Effect *spawn_effect(int id, SurgeStorage *storage, FxStorage *fxdata, pdata *pd
     case fxt_tape:
         return new chowdsp::TapeEffect(storage, fxdata, pd);
     case fxt_ensemble:
+#if defined(_M_ARM64EC)
+        return nullptr;
+#else
         return new BBDEnsembleEffect(storage, fxdata, pd);
+#endif
     case fxt_treemonster:
         return new TreemonsterEffect(storage, fxdata, pd);
     case fxt_waveshaper:
diff --git a/src/common/dsp/effects/BBDEnsembleEffect.cpp b/src/common/dsp/effects/BBDEnsembleEffect.cpp
index a17c4662a42..d89c33438b0 100644
--- a/src/common/dsp/effects/BBDEnsembleEffect.cpp
+++ b/src/common/dsp/effects/BBDEnsembleEffect.cpp
@@ -20,6 +20,8 @@
  * https://github.com/surge-synthesizer/surge
  */
 
+#if !defined(_M_ARM64EC)
+
 #include "BBDEnsembleEffect.h"
 
 #include "sst/basic-blocks/mechanics/block-ops.h"
@@ -569,3 +571,5 @@ void BBDEnsembleEffect::handleStreamingMismatches(int streamingRevision,
         fxdata->p[ens_output_filter].deactivated = true;
     }
 }
+
+#endif
\ No newline at end of file
diff --git a/src/common/dsp/effects/BBDEnsembleEffect.h b/src/common/dsp/effects/BBDEnsembleEffect.h
index cfc6a03ba52..07c3ab5e01a 100644
--- a/src/common/dsp/effects/BBDEnsembleEffect.h
+++ b/src/common/dsp/effects/BBDEnsembleEffect.h
@@ -23,6 +23,8 @@
 #ifndef SURGE_SRC_COMMON_DSP_EFFECTS_BBDENSEMBLEEFFECT_H
 #define SURGE_SRC_COMMON_DSP_EFFECTS_BBDENSEMBLEEFFECT_H
 
+#if !defined(_M_ARM64EC)
+
 #include "Effect.h"
 #include "BiquadFilter.h"
 #include "DSPUtils.h"
@@ -109,4 +111,6 @@ class BBDEnsembleEffect : public Effect
     BiquadFilter sincInputFilter;
 };
 
+#endif
+
 #endif // SURGE_SRC_COMMON_DSP_EFFECTS_BBDENSEMBLEEFFECT_H
diff --git a/src/common/dsp/effects/chowdsp/tape/HysteresisOps.h b/src/common/dsp/effects/chowdsp/tape/HysteresisOps.h
index 2939c1fc65a..284dd5fd703 100644
--- a/src/common/dsp/effects/chowdsp/tape/HysteresisOps.h
+++ b/src/common/dsp/effects/chowdsp/tape/HysteresisOps.h
@@ -26,7 +26,11 @@
 #include "globals.h"
 #include "sst/basic-blocks/dsp/FastMath.h"
 
+#if defined(_M_ARM64EC)
+#define CHOWTAPE_HYSTERESIS_USE_SIMD 0
+#else
 #define CHOWTAPE_HYSTERESIS_USE_SIMD 1
+#endif
 
 namespace HysteresisOps
 {