Duophone Double Tonearm

Duophone Double Tonearm 

Described In December 1923 as:

A Revelation in Real Reproduction

THE DUOPHONE has amazed Master Musicians. It has been a revelation as to the possibilities of Sound Reproduction. So perfect is the effect that it seems impossible and unnecessary to advance upon it. Other inventions have arrived, but the “ Duophone” remains a class apart.

The most critical of music lovers have had all prejudice swept away and have at last felt proud to have in their homes for delight and study an Instrument that reproduces perfectly exactly what was sung or played.

Human — Natural — Perfect to the highest degree — Reproduction through the Duophone eliminates all sense or feeling of mechanism. The singers and players are with you.

Interested as you are in Gramophones—you must not be content until you have heard for yourself this Wonder Thing—which has created such a thrill and is being talked of the world over. You can hear it at most of the Principal Dealers. Call in to-day.

The DUOPHONE Models are built best to embody the precious principle of the invention—cheap as any standard models—100%, better in effect—100%, British, and meet most requirements as to design and cost.

The DUOOPHONE double-tonearm and sound box operating through a single needle carry the light and heavy vibrations separately and blend them in the amplifying chamber—the result being perfection of tone together with increased volume—an exact reproduction.
This Tone-Arm can be fitted to existing instruments if desired, at moderate cost.

Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Duophone Syndicate Ltd. & the Duophone and Unbreakable Record Co. Ltd.;London