This tube-based device is designed to equip Hammond organs with an effects loop, allowing the organist to use external effects such as distortion, flanger, echo, reverb, wah-wah…

The device does not alter the original tone of the Hammond organ.

It is also possible to connect any musical instrument (such as guitars and keyboards) via the jack input.

The kit is extremely easy to install and does not require a technician. It is compatible with Hammond AO-28 preamplifiers (models B3, C3, A100, RT3, D100).

Installation instructions:

• Remove the 12BH7 tube, insert the socket, and reinsert the tube.

• Ground the cable by unscrewing the front cover screw on the preamp, insert the small connector, and then screw it back in.