Audere Audio Engineering. Sure the Audere on-board bass preamp sounds great - but better than
that, it has three fundamentally different voices with the Z-Mode Switch.With
the flip of the switch you can change between the passive bass voice, a
deep clear, note defining voice, or the bright, high voice that is so
popular for slapping. The new Pro versions gives you even more control;
at your option, you can reprogram the Z-mode switch to mix it up with a
different voice for each pickup.