The preamp uses precision op-amps with each input configuration selected to match the characteristics of the magnetic and piezo pickups. Detailed design ensures optimum balance between low noise and battery consumption.
A moderated level of amplification is used to maximise signal to noise ratio ensuring standard amplifier compatibilitywithout overloading. Filters and tone control terms optimise the response to the bass guitar frequencies.
Active tone controls at the mid setting provide a flat frequency response, counter clockwise rotation boosts bass and cuts treble, clockwise rotation has the opposite effect.
The frequency around which this rotation point occurs has been selected to match the instrument acoustics.
This simplicity of using one tonal control plus individual volume controls for each pick up allows an extensive range of tonal variation