diff --git a/reverb/reverb.hpp b/reverb/reverb.hpp
index ef5bbba..6ceefa8 100644
--- a/reverb/reverb.hpp
+++ b/reverb/reverb.hpp
@@ -101,6 +101,7 @@ class Diffusor
 		return temp[0];
 	}
 
+	// In-place
 	inline void process_multi(T in_out[numCh])
 	{
 		m_dly.process(in_out);
@@ -108,6 +109,15 @@ class Diffusor
 		Shuffle<T, numCh>::inPlace(in_out, m_shuffle_spec);
 		Hadamard<T, numCh>::inPlace(in_out);
 	}
+
+	// Out-of-place
+	inline void process_multi(T in[numCh], T out[numCh])
+	{
+		m_dly.process(in);
+
+		Shuffle<T, numCh>::outOfPlace(in, out, m_shuffle_spec);
+		Hadamard<T, numCh>::inPlace(out);
+	}
 };
 
 template<typename T, uint numCh>