Keeley HYDRA - Primary Controls; Rate Control; Depth Control; Dwell Control

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PRIMARY CONTROLS
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1
RATE - Sets the rate of the Tremolo. Turn left for
slower speeds, right for faster.
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DEPTH - Sets the maximum amount of volume
reduction for the Tremolo.
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COLOR - Sets the tone of the Reverb. Pressing this
control grants access to alternative settings and
presets.
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MIXER - Sets the level of the Reverb. Turn left for a
lower Reverb volume, right for higher Reverb volume.
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TOGGLE SWITCH - Selects between Spring, Plate
and Room Reverb types.
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DWELL - Sets the length of the Reverb trail. Turn left
for less, right for more.
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