Decap Brothers have continuously tried to give their organs a unique character. Decap organs are immediately recognisable by their sound as well as their outward appearance.

In 1933 the first self-playing accordions were introduced onto the organs; two years later in 1935 the first full drum kit was incorporated into an organ front. The next year, 1936, dummy saxophones were added to the fronts. In 1943 the wind supply was changed over from the traditional bellows to electric blowers, and the book wheel, enabling continuous play, was introduced in 1955.

Decap organs always have an extensive rhythm section comprising of a full drum kit and extra percussion instruments such as wood block, tambourine,  temple blocks, maracas etc. so that all dance rhythms can be achieved. Some organs include real xylophones or glockenspiels.

1953 saw the first use of electronic sound-production in our organs and since then the use of electronics has become commonplace in them. Electronic control systems to replace perforated cardboard  (with obvious advantages for commercial users) have also been introduced.

Not withstanding these modern developments, the old pneumatic technology has remained, and in 1989 we began building traditional full pipe organs again.