Active 3-band electronics with selectable midrange frequencies
completely prewired with volume(push-pull)-, blend-, bass-, midrange- treble potentiometer,
output jack and 9V battery clip

module dimensions: 20x30,5x15 mm

Potentiometer:
thread diameter: 7 mm
required drilling diameter: 7,5 mm
plain shaft with 6 mm diameter
​screwable knobs required !

Special Price !
The electronic was once installed in a bass for testing.  

Here is the original description by DELANO:

Scaling new heights in perfecting the tonal capabilities of magnetic pickups, the Delano Sonar bass preamp series is designed for just one purpose: Making a good tone even better.
As an integral part of any active bass guitar, an active EQ has to fulfill countless requirements regarding strength and clarity in tone, power consumption and installation. To meet this challenge perfectly, the time has come for a new onboard preamp: Sonar.
This smart powerhouse delivers the real thing: rocksteady bottom, cutting midrange and naturally brilliant high end. Whether adapting its tone to match the surrounding acoustics, enhancing versatility or increasing your musical expression, this preamp always feels like a natural extension, preserving all the benefits of passive operation: uncoloured, true and focused sound. Comparing the flat-set sound to bypassed full passive action you´ll detect no difference. Matchless. And with its perfectly matched band-pass filters and separated amplifier stages, adjustments stay predictable at any time without overpowering tone.
The Delano Sonar onboard preamp is housed in a sealed slim-box, which provides easy, space-saving installation and secure insulation to other electrical components. Its minimal power consumption lets you forget where your battery-box is - make a guess?

Copyright © 2008 Delano / Technical changes reserved.

Further information: PDF (see below) or www.delano.de