On the 14th June 1924, the Gramophone Magazine held gramophone tests at the Steinway Hall. The Magnaphone was entered and did very well coming second place in Class II. The soundbox used was the Seymour Concert. By July 1924, Michael Ginn was obliged to change the name of the Magnaphone due to an existing trade mark. The E.M.G Handmade Gramophone was born.
The following year The Gramophone held more tests at the Caxton Hall. The E.M.G gramophone model B was entered in the tests. The Steinway Hall tests had shown up the limitations of the E.M.G branded Seymour Concert soundbox so they decided to design a unique E.M.G soundbox. But with time running out for the tests, they decided to use two off the shelf reproducers, the Luxus for normal lateral cut records and the Jewel for playing Edison’s vertical cut Diamond Discs. The E.M.G came in third receiving the bronze medal. It would have no doubt done better had they used a better soundbox like a Virtz or Wild.
The Jewel was an American design with a "Nom-Y-Ka" diaphragm. It was marketed in Britain by Jake Graham "The Edison Specialist" of Liverpool.