The Demeter Tremulator Plus is based on the company’s classic Tremulator pedal, upgraded to include a Bias control to adjust on/off ratio. Its clock waveform can be adjusted to a pure triangle (smooth up/down volume), normal flattened triangle (smooth up/down volume with strong on/off), or a sharp-cutoff square wave, while its Gain control adjusts the effect’s output volume. A Rate LED displays speed of the tremolo. The unit offers true-bypass switching and is hand-built in California. Read more at demeteramps.com.