Description
MXR’s Thump Bass Preamp started life as a happy accident: the design team discovered that the circuit powering the Echoplex Preamp’s guitar tone worked just as well pushed through a bass rig. Rather than let that discovery go to waste, they built it into a dedicated bass preamp, adding a straightforward tone-shaping control set so low end gets the same treatment guitarists have relied on for years.
Place it early in your signal chain and it works as both a subtle sweetener and a genuine signal boost, thickening up your tone without burying the note definition that makes bass parts sit in a mix. It’s equally at home tightening up a live rig for stage volume or adding character to a DI signal in the studio.
- Preamp circuitry adapted from the Echoplex Preamp, reworked specifically for bass frequencies
- Simple tone-shaping interface for dialing in warmth, boost, and clarity
- Suited to both stage and studio use
For bass players who want more than a clean buffer — something that adds body and drive to the front of the board without demanding a steep learning curve — the Thump Bass Preamp offers an easy way to find that extra bit of groove.









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