Rocktron Black Cat Moan Wah Pedal $109.99
Multi-functional wah pedal that can act as stand alone distortion, that can be combined with the wah effect.

that can act as a stand alone distortion and can be combined with
the wah for an effect that cries harder and sweeter than a baby.
The Moan effect has been specifically designed for heavy
distortion situations, although it can be used in all situations. The
Moan effect will be most apparent when using a heavier distortion.
The effect can sometimes be subtle depending on the natural
harmonics of your guitar or bass.

The Black Cat Moan has a three position selector switch that
allows you to choose one of three different wah voicing modes.
While the Cat is an amazing tool for guitar players, the third mode,
now get this, is "BASS" – yes – that is right – BASS! Plug this into
a bass rig and you won’t believe how moanfully sweet it is!

A Wah ON/OFF switch is located under the toe of the rocker
footpedal while a side "kicker" switch is used to turn the MOAN
effect On or OFF. The MOAN can be used as a stand alone
distortion or applied to the wah effect using the COMBINE
MOAN/WAH switch.
Moan Level Control adjusts the overall output of the MOAN
effect when the MOAN effect is activated. Moan Gain Control
provides a mid-frequency band pass filter harmonic boost, but
hey, we just call it MOAN!

Wah Type Selector Control allows you to select three different
Wah modes – Normal, Classic and Bass. Once you have selected
the Wah Type you can also further modify the sound by using the
Moan gain and level controls.
A pedal rocker tension adjustment screw will allow you to adjust
the "action" of the Black Cat Moan pedal to suit your taste – using
an allen wrench.