diff --git a/src/engine.cpp b/src/engine.cpp
index 6fbeef34..9c1a9ce4 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -54,6 +54,8 @@ void Light::setBrightnessSmooth(float brightness, float frames) {
 
 void Wire::step() {
 	float value = outputModule->outputs[outputId].value;
+	// Assume a +/-12V power supply (like Eurorack), and prevent voltages outside the power range.
+	value = clamp(value, -12.f, 12.f);
 	inputModule->inputs[inputId].value = value;
 }