As a Quad 57 owner for over 30 years, I finally gave up on them and purchased a pair of Harbeth 40.1's. Listening at the apex of an approximate isosceles triangle(about 10 ft. on each side) the 40.1's are almost as transparent as the Quads but of course can play much louder. Augmented by a good subwoofer and with DSpeaker bass correction, the resulting sound on vinyl can be spectacular(assuming a good vinyl recording)