$5.00
Pow! is a simple non-linear voltage-to-voltage converter which applies a power function to the input signal, with a curve that maps 0v to 0v and +5v to +5v while passing through a midpoint (x, y) where +xV is mapped to +yV.
The values of x and y can be set via knobs or by dragging a control point on the display, and can also be modulated by input signals.
For negative voltages (-5v to 0v) either an inverse curve is applied, mapping -5v to -5v and -xV to -yV, or the signal is rectified, mapping -5v to +5v and -xV to +yV. Scaling and DC bias can also be added post-rectification.