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diff --git a/src/main/java/com/jsyn/unitgen/TwoInDualOut.java b/src/main/java/com/jsyn/unitgen/TwoInDualOut.java
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+++ b/src/main/java/com/jsyn/unitgen/TwoInDualOut.java
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+/*
+ * Copyright 2004 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.unitgen;
+
+import com.jsyn.ports.UnitInputPort;
+import com.jsyn.ports.UnitOutputPort;
+
+/**
+ * This unit combines two discrete inputs into a dual (stereo) output.
+ * 
+ * <pre>
+ *  output[0] = inputA
+ *  output[1] = inputB
+ * </pre>
+ * 
+ * @author (C) 2004-2009 Phil Burk, SoftSynth.com
+ */
+
+public class TwoInDualOut extends UnitGenerator {
+    public UnitInputPort inputA;
+    public UnitInputPort inputB;
+    public UnitOutputPort output;
+
+    public TwoInDualOut() {
+        addPort(inputA = new UnitInputPort("InputA"));
+        addPort(inputB = new UnitInputPort("InputB"));
+        addPort(output = new UnitOutputPort(2, "OutputB"));
+    }
+
+    @Override
+    public void generate(int start, int limit) {
+        double[] inputAs = inputA.getValues();
+        double[] inputBs = inputB.getValues();
+        double[] output0s = output.getValues(0);
+        double[] output1s = output.getValues(1);
+
+        for (int i = start; i < limit; i++) {
+            output0s[i] = inputAs[i];
+            output1s[i] = inputBs[i];
+        }
+    }
+}