The dp musicworks Little Tremble is a basic FET based tremolo pedal. The oscillator circuit generates a semi-sinusoidal wave and is actually based on a 1970 transistor-tube-hybrid amp design by a famous amplifier manufacturer. It is powered by a 9-volt battery and comes finished in hammered light green with a matte black bottom. It also includes rate and depth controls, true bypass switching, a red LED status indicator that flashes to monitor the rate, and an AC adapter input (adapter not included). It's overall dimensions are approximately 4-3/8" x 2-1/2" x 1-3/4".
The Little Tremble is $149.00 plus shipping and applicable tax.