The net frequency response of an audio system in which two or more sections of an equalizer are in use.



"Thanks for the amazing job you did on the collection of OLD 45's that I sent! They were not in very good condition with the numerous scratches. I had been hanging on to them for 35 years, so, was I ever pleased to be able to listen to them again without the scratches. Another shipment will be coming your way!! Thanks,"