If you’re a seasoned collector of medical devices then you already know just how rare the Violin Vibrophone is. I was told that it was a quack cure used for Tinnitus. It was able to be tuned to match the ringing in a subjects ears. There are 2 black wooden receivers included with the kit. The instructions read… “The Larger receiver is for the more chronic cases”. I’m sure the patient was thrilled to know the frequency at which their ears would start to ring.