The Reference 750 SE Mono-Block amplifier is the current flagship model from Audio Research capable of delivering 750 watts RMS of power into speaker loads of 4, 8 and 16 ohms. These pristine units were refurbished at the factory before being put on sale. They were brought up to spec and one capacitor was replaced. These amplifiers are extremely rare and in Like NEW condition.They were a pleasure to own and highly recommended. The last two pics are stock photos. The item "PAIR (2) Audio Research Reference 750 SE MONOBLOCK Vacuum Tube amplifiers" is in sale since Friday, November 22, 2019. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Home Audio Components\CD Players & Recorders". The seller is "alain3080" and is located in Champlain, New York. This item can be shipped to United States, Canada.