MXR Thump Bass Preamp

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The Thump Bass Preamp

This pedal combines the tone-sweetening magic of the Echoplex® Preamp with a three-band EQ and midrange frequency adjustment so that you can dial in the perfect bass tone to punch up a solo, boost your signal in a live mix, sculpt more edge into the sound of a passive bass, and more.

Specs

Knobs

OUTPUT
Sets the output level of effect
TREBLE
Boosts or cuts high end frequencies at 4 kHz. ±10 dBV.
MID
Boosts or cuts midrange as set by FREQUENCY knob. ±16 dBV, 1 kHz
BASS
Boosts or cuts bass frequencies at 40 Hz + 15/-7 dBV,
FREQUENCY
Adjust the midrange frequency from 250 Hz to 1 kHz.

Switches

FOOTSWITCH
Toggles effect on/bypass (blue LED indicates on)

Power

Power
The ThumpTM Bass Preamp is powered by the Dunlop ECB003 9-volt adapter or the DC BrickTM, Iso-BrickTM, and Mini Iso-BrickTM power supplies. This pedal cannot be powered by a battery.
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