If you are in need off a classic tremolo/vibrato effect with excellent sound and with a wider range of control for very slow and exceptionally deep sounds, you would want to try the Tremster from T-Rex-Engineering.

The Tremster creates the buttery, seductive tone from a vintage tube amp tremolo.

This is accomplished by slightly boosting the signal, thus resulting in a more saturated tone.

The Tremster has all the controls you would expect with depth, volume and speed dials as well as a MODE-button switching between tremolo/vibrato-effect and a foot switch to toggle the effect on or off.

Last but not least The Tremster has a flashing LED light that will help to tailor the speed of the effect and get it in time with your tune.

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"The tremster gives me a natural, 60's fender amp style tremelo, in a quiet footpedal format. The vibrato mode gives an added boss style vibrato effect and the whole unit is very clean sounding with a true bypass design."

 - Adrian Petrache (Guitar Sales)

Link to official  T-Rex product page: http://www.t-rex-engineering.com/default.asp?show=page&id=2345