Quad The Closest Approach by Ken Kessler

Quad: The Closest Approach, by Ken Kessler. This is a 240 page hard-back, authoritative history with commentaries and contributions from throughout the industry.

Including technical chapters from Tim De Paravicini and Gordon Hill and interviews with Peter Walker, Ross Walker, Stan Curtis and Mike Albinson.

Along with a series of stunning new photographs and reproductions of AES technical papers, this must be regarded as the definitive guide to Quad.