MXR M233 Micro Amp Plus Gain Boost Pedal

We have the classic MXR M233 Micro Amp Plus Gain Boost Pedal. Gives your signal an extra push for soloing, or just a lush gritty sound.

With its Gain knob, the Micro Amp+ allows you to dial up just as much gain as the original—up to +26dB—but with added EQ controls, you can now finely sculpt your boosted signal.

For the classic Micro Amp sound, set the Bass and Treble controls to noon. Along with these upgrades, the MXR Custom Shop team added low-noise op amps—so you don’t get any extra noise at super high levels—and true bypass switching. With the sturdy housing and durable components that MXR is known for, this pedal is ready for the road.

MXR Custom Shop effects are designed for discerning players with unique and specific needs—players who know their gear inside and out and carefully consider every part of their signal chain, from guitar output to amplifier input. Likewise, the Custom Shop’s master pedal builders consider every component and circuit board layout choice with the same discretion, ensuring players with refined tastes and finely tuned ears get the tools they need for their own sonic exploration.

Main Features:

• Up to +26dB clean boost 
• Specially-tuned Bass and Treble controls for fine tonal shaping 
• Low noise circuitry True bypass switching