MXR
MXR M233 Micro Amp+
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.
Additionally, the Micro Amp+ now comes equipped with 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.