MXR Thump Bass Preamp M281

The MXR M281 Bass Preamp is a compact tone-shaping powerhouse designed to give bass players studio-quality sound and flexibility in any rig. Whether you’re running direct, enhancing your amp’s tone, or building a pedalboard-based setup, the M281 delivers rich, articulate bass tone with professional control.

At its core is a fully sweepable 3-band EQ with midrange frequency control, allowing you to precisely dial in your sound—from deep, tight lows to punchy mids and clear, defined highs. The Gain control adds everything from clean boost to gritty drive, while the Master output ensures you have plenty of volume on tap.

Equipped with a balanced XLR DI output, the M281 is perfect for live performance and studio recording, delivering a clean, noise-free signal straight to the board. A Ground Lift switch helps eliminate unwanted hum, making it a reliable tool in any environment.

Built with MXR’s rugged construction and pedalboard-friendly size, the M281 is an essential all-in-one solution for bass players who demand control, clarity, and versatility.

Key Features:

• Fully sweepable 3-band EQ with midrange frequency control
• Gain control for clean boost to driven tones
• Master output for precise level adjustment
• Balanced XLR DI output for direct recording and live use
• Ground Lift switch to eliminate hum and noise
• Compact, durable MXR housing

From stage to studio, the MXR M281 Bass Preamp gives you the tone-shaping power and flexibility to sound your best in any situation.