Born in 1966 these speakers dominated the speaker listening standard for 2 decades.Ive had these for 30 years.They need stripping down and rebuild to replace some milar panels.Screen Facing on one damaged.The trandformers are fine. Vinyl lovers with top end turntable and valve amps will kill for Quads.These speakers sold for $10k in the 1980s. Project for someone who loves the best sound stage Imaginable.