The Duophone. British Manufacture. 

The ‘duophone' label was named after a record player made by the Duophone Syndicate Ltd., of 63 Queen Victoria Street, London; the uniqueness of the player was its double soundbox (pickup head), to increase volume. This was in the mid 1920's. In October 1925, it released its first The Duophone pressing, based on a competition for people to suggest what music would be best released. The first records were mainly of a Lt.Col. J. McKenzie-Rogan and his symphony orchestra or military band. They twelve-inch records were numbered A-1000 upward; the 10-inch B-5000 upwards.   The pressing on the right of The Regent Military Band could well be that of the esteemed Lt.Colonel. 

In November 1926, the company released "the revolution of the decade" which were ‘unbreakable', and sported the same general design but were now gold on black. The problem was that whereas the records themselves were very sturdy and would not break on droppping, the grooves were fragile and could not take much more than a fibre needle. 

In August 1928, the Duophone and Unbreakable Record Company Ltd., as iot was now called, gained control of British Brunswick, and released a new label that no longer showed the duophone recording head on the label. The D-4001 upward series thus featured many American dance bands that were contracted to Brunwick-Balke-Collender including Vincent Lopez, Red Nichols, Meter Davis, and Harry Reser's Six Jumping Jacks. The  Savoy Plaza Band was also featured. It is important to note that these later Duophone pressings included the Brunswick catalog numbers, which gave more artist detail. 

In 1929 the final series were released, F-2001 upwards; these are significant in that they did not include any Amercian artists, but featured one of Britain's finest arrangers and bandleaders, Lew Stone. The end of 1930 was also the end of Duophone. 

L026 sc4 THE DUOPHONE  British Manufacture 
B-5101 (G1558),  NORMANDY  (Robinson, Britt).  Frank Gilbert. Baritonee, with Orchestra Accompaniment.
B-5101 (G1314),  MOON OF WAIKIKI  (Robinson, Bernard)  Ibid.  [In original Duophone sleeve.]

L224 sc3+ THE DUOPHONE British Manufacture.
B-5100 (G1461),  ROLLING STONE (Valentine Tunbridge).  
Sung by Fred Wilberforce, baritone, with Orchestral Accompaniment.
B-5100 (G1550),  A FOOL'S PARADISE (Carlton Wright). 
Sung by Ralph Walters, Baritone with Orchestra Accompaniment.