Conventional HAUPTWERK keyboards feature static permanent magnets beneath each key, which approach and repel each other when the key is pressed.

This characteristic is also its biggest drawback: static magnets always repel each other, regardless of the direction of movement! This means that when you release the key, you’ll feel an unpleasant “bounce” and have to suppress it by applying more pressure with your finger.

However, if you carefully observe a mechanical organ, you will notice the following:

A pressure peak occurs not only when the key is depressed – opening the valve – but also upon release! Just before the key returns to its resting position, the valve closes with a noticeable pull.

This clear distinction between the key's downstroke and return stroke also holds particular musical significance: Unlike the piano, the organ does not allow for velocity sensitivity. Therefore, tonal shaping is achieved solely through controlling the speed at which the valve opens and air flows into the pipe – much like a singer's breath control.

Extremely poor conditions for effective and, above all, relaxed practice!

For electronic organ keyboards, we are therefore using controllable electromagnets for the first time. Each electromagnet consists of a copper coil per key, into which a magnetic pin embedded on the underside of the key is immersed.

During play, sensors detect the position of each key. This position is then converted (depending on the selected settings) into the desired counterforce for the key, and the coil is energized accordingly.

This allows almost any action to be faithfully replicated – and at the touch of a button!

KEYCHANGE KEYBOARDS are therefore the first choice for maximally realistic playing conditions – for the ambitious student as well as the discerning professional.