We have a customer consignment Equi-Tech 2Q power conditioner for sale.  It is in great condition with no visible blemishes or scuff marks.  It is working perfectly, and no hum at all. 

It comes with original box, packing material, and manual.  No power cord.

The model Q is the result of many years of experience and aplication research in the field of balanced AC power.  It is the highest quality and the best performing balanced power system Equi-Tech has ever offered.