MXR M281 Thump Bass Preamp Pedal

Born from the legendary Echoplex® Preamp circuitry, the MXR Thump Bass Preamp brings that coveted sonic magic to the low end with remarkable results. MXR’s design team, working closely with their in-house bass players, recognised the potential of adapting this guitar-focused circuit for bass applications. The result is a tone-sweetening, signal-boosting pedal that enhances your groove with the same carefully balanced EQ profile that made the original Echoplex Preamp so revered.

The intuitive control layout makes dialling in your perfect bass sound straightforward and effective. Treble and Bass knobs provide cut or boost at 4 kHz and 40 Hz respectively, while the Mid knob works in conjunction with the Frequency control to shape midrange content anywhere from 250 Hz to 1 kHz. This frequency range was specifically chosen to give bass players maximum flexibility with minimal complexity when refining their signal.

From punching up solos to boosting your presence in a live mix, or adding edge to passive bass pickups, the Thump Bass Preamp packs incredible versatility into MXR’s compact mini housing. It’s equally at home on stage or in the studio, making it an essential tool for any bassist seeking professional tone-shaping capabilities.