A reprint of a 1959 publication of Mullard Ltd., detailing high-quality circuits for audio amplifiers, pre-amplifiers and other stereophonic reproduction equipment. These designs were originated by Mullard engineers at the Mullard Applications Research Laboratory, and originally appeared in various magazine articles with notes on construction and assembly.
It's kind've absurd that this is available for rating - it's a collection of schematics for power- and pre-amplifiers designed by the engineers at a British vacuum tube manufacturer in the 50s and 60s.
They're wonderful circuits and there's a fair bit of learning to be had in the included descriptions (each phase of each ckt. is explained), but it's certainly not something anyone would just sit down and read.