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AJ21 & 51 Guitar Stick-on Transducers

These are our original concept pickups, and although they have been refined over the years, we are not alone in believing they have yet to be improved upon by anybody.

They have been found to be particularly useful for amplifying "difficult" instruments like Maccaferri style jazz guitars, Dobros and other Resonator guitars.

Other instruments include the Hurdy-Gurdy, Ukeleles, Mandolins, Dulcimers, Bouzoukis - and a host of exotic and less familiar instruments.


In fact, practically anything with strings..

Bullet The AJ21 reproduces the sound present in almost any surface it is attached to with great accuracy and very high output (such that a limiting resistor is fitted as standard in the jack socket).

It can be used with a wide variety of instruments besides guitar.

The best attachment place is found by experimentation, but is usually on the bridge or close to it.

Bullet It is possible to combine two AJ21s and mix the sound from different positions, both in phase (where the sound is a simple blend) and out,
where the sounds subtract from each other to cause tonal variation dependent on the degree of physical separation.

The pickups are out of phase when one is attached by its opposite face relative to the other. This mode also has the potential for feedback-cancelling.

Bullet INTERNAL INSTALLATION: Find the place (usually directly under the bridge) which produces the best sound using the double-sided tape provided.
Quick-set epoxy may be used for permanence, but avoid polyurethane and contact glues, as these can affect tone. Inside, it is recommended to attach the AJ21 by its upper (bevelled) face. If changing the socket, don't forget the limiting resistor (120K) which is connected across the terminals - i.e. in parallel with the output.

Bullet Please see also: AJ11, 31, and 41

£59.50


Bullet The AJ51 (Budget Bug) is similar to the AJ21, but suitable for high impedance inputs only. There is no resistor in the socket.

£29.50