Be sure to add me to your favorites list Original Aphex Aural Exciter Type C 103A Harmonic Enhancer Operating Guide Owner's Manual Book. This is an original Aphex Aural Exciter operation / owner's manual book for the Type C Model 103A. It's in well-used, but still good condition and is an original document from Aphex. The front page is partially separated from the rest, but still attached. I will leave it to the buyer to add staples if they like. This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thanks for looking! Check out my Store!