Dear Hchilcoat,
Actually, you forgot to mention that if you invert the polarity by rewiring the unit inside and then rub the glass while keeping your finger firmly planted in the tube socket and say Abracadabra, a secret compartment will open up on the rear of the unit and contain the keys to great treasure left over by the Duke of Norfolk and then passed on to the King of England. The Portland Vase can then be used to damp all unwanted vibrations inside the listening room. Dont forget to pass this on. Thanks.
Daniel Khesin
www.DKdesignGroup.com