diff --git a/Part-5:-Amplifier,-Cables-and-Conclusion.md b/Part-5:-Amplifier,-Cables-and-Conclusion.md
index 53e521d..3ec3a0c 100644
--- a/Part-5:-Amplifier,-Cables-and-Conclusion.md
+++ b/Part-5:-Amplifier,-Cables-and-Conclusion.md
@@ -12,6 +12,8 @@ You will need the following:
 - Amplifier Case Bottom
 - 2 Small Screws
 
+**Note:** Your kit may contain an Amplifier PCB that is already placed inside the Amplifier Case.
+
 ## OPTIONAL: Upload the latest firmware to the Amplifier
 
 Now is a good time to do this, since the PCB isn't yet in its case. [Follow these instructions to upload the latest firmware](https://github.com/ploopyco/headphones/wiki/Appendix-C:-Firmware-programming#2-uploading-new-firmwares-to-the-amplifier); it should take about five minutes.