diff --git a/src/processing/sound/Env.java b/src/processing/sound/Env.java
index 9e3f913..e19e66a 100644
--- a/src/processing/sound/Env.java
+++ b/src/processing/sound/Env.java
@@ -28,7 +28,7 @@ public Env(PApplet parent) {
 	**/
 	public void play(SoundObject input, float attackTime, float sustainTime, float sustainLevel, float releaseTime) {
 		SegmentedEnvelope env = new SegmentedEnvelope(new double[] {
-				attackTime, 1.0, // attack
+				attackTime, input.amp, // attack
 				// gradual decay towards sustain level across entire sustain period
 				sustainTime, sustainLevel, // sustain
 				releaseTime, 0.0 });