Demeter TRM-1 Tremulator

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The Demeter TRM-1 Tremulator is a tremolo pedal which has been manufactured by Demeter Amplification since 1982. It was apparently designed at the request of guitarist Ry Cooder, who wanted a pedal that sounded exactly like a vintage Fender tremolo unit for use with any amp.


The Tremulator has 2 knobs, which are, from left to right:

  • "Depth" (controls the amount of amplitude modulation on the signal or the amount of effect)
  • "Speed" (increases and decreases the frequency of the low-frequency oscillator)

There is also a trim pot on the side to set the bias for the optical unit, and the unit comes preset at Ry Cooder's preferred settings.

Tremulator users[edit]

Notable musicians who have used the Tremulator include:

External links[edit]