diff --git a/CHANGELOG.md b/CHANGELOG.md
index 031c8c6..cfaf1f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@
     * Initial release
   * PonyVCO
     * Now polyphonic
+  * Misc
+    * Fix trigger inputs to follow Rack voltage standards (Kickall, Muxlicer, Rampage)
+
+## v2.4.1
+  * Rampage
+    * Fix SIMD bug
 
 ## v2.4.0
   * MotionMTR
diff --git a/src/Kickall.cpp b/src/Kickall.cpp
index fc48fea..f415505 100644
--- a/src/Kickall.cpp
+++ b/src/Kickall.cpp
@@ -81,7 +81,7 @@ struct Kickall : Module {
 
 	void process(const ProcessArgs& args) override {
 		// TODO: check values
-		const bool risingEdgeGate = gateTrigger.process(inputs[TRIGG_INPUT].getVoltage() / 2.0f);
+		const bool risingEdgeGate = gateTrigger.process(inputs[TRIGG_INPUT].getVoltage() / 2.0f, 0.1, 2.0);
 		const bool buttonTriggered = buttonTrigger.process(params[TRIGG_BUTTON_PARAM].getValue());
 		// can be triggered by either rising edge on trigger in, or a button press
 		if (risingEdgeGate || buttonTriggered) {
@@ -156,4 +156,4 @@ struct KickallWidget : ModuleWidget {
 };
 
 
-Model* modelKickall = createModel<Kickall, KickallWidget>("Kickall");
\ No newline at end of file
+Model* modelKickall = createModel<Kickall, KickallWidget>("Kickall");
diff --git a/src/Muxlicer.cpp b/src/Muxlicer.cpp
index 23ed3b6..cafa397 100644
--- a/src/Muxlicer.cpp
+++ b/src/Muxlicer.cpp
@@ -1120,7 +1120,7 @@ struct Mex : Module {
 					// gate in will convert non-gate signals to gates (via schmitt trigger)
 					// if input is present
 					if (inputs[GATE_IN_INPUT].isConnected()) {
-						gateInTrigger.process(inputs[GATE_IN_INPUT].getVoltage());
+						gateInTrigger.process(inputs[GATE_IN_INPUT].getVoltage(), 0.1, 2.0);
 						gate = gateInTrigger.isHigh();
 					}
 					// otherwise the main Muxlicer output clock (including divisions/multiplications)
diff --git a/src/Rampage.cpp b/src/Rampage.cpp
index 53923ed..545bc49 100644
--- a/src/Rampage.cpp
+++ b/src/Rampage.cpp
@@ -220,7 +220,7 @@ struct Rampage : Module {
 			for (int c = 0; c < channels[part]; c += 4) {
 
 				// process SchmittTriggers
-				float_4 trig_mask = trigger_4[part][c / 4].process(in_trig[c / 4] / 2.0);
+				float_4 trig_mask = trigger_4[part][c / 4].process(in_trig[c / 4] / 2.0, 0.1, 2.0);
 				gate[part][c / 4] = ifelse(trig_mask, float_4::mask(), gate[part][c / 4]);
 				in[c / 4] = ifelse(gate[part][c / 4], 10.0f, in[c / 4]);