Ver. 2.0 - ©Phædrus Audio Ltd. 2015 All rights reserved.
Preface – About Phædrus Audio
Phædrus Audio was formed to design, manufacture and sell high-quality products for the professional and semi-
professional audio market. Phædrus Audio's founders remain inspired by the music and the recording practices of
the fifties and sixties, and are motivated to re-establish the values of the great audio-technology legends of the
past with their ideals of transparency, hand-built quality, and serviceability. Using modern manufacturing
techniques and the benefits of modern component technology, Phædrus Audio's aim is to reproduce the quality
and character of classic equipment but in a modern, highly reliable, and cost-effective way.
Chapter 1 - Background
The Phædrus Audio products came about because two, recording musicians wanted to own a "classic" console
from the nineteen-sixties. Ideally a famous EMI, REDD, all valve (vacuum tube) mixer used to record The Beatles.
But those desks make a collection of hen's
teeth look positively prosaic - as well as
cheap! So, we set about researching with
the idea of producing a replica console.
In order to do this, first it was necessary to
have a design for the amplifier modules
around which the mixers of this vintage
are organised.
In the famous EMI REDD mixers, these
amplifiers were either the German
manufactured V72(S) amplifiers or the,
very rare, EMI built, REDD.47 amplifiers.
