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MXR Micro Amp+ Boost Pedal

MXR Micro Amp+ Boost Pedal



Order before 3pm Mon-Fri for Next Day Delivery

MXR Micro Amp+ Boost Pedal - An Upgrade to the Legendary MXR Micro Amp

MXR's Micro Amp pedal has been a mainstay on countless pedalboards the world over for more than two decades now, so those clever scientists over at the MXR Development Team decided it was time for an upgrade: introducing the all-new MXR Micro Amp+!

Powerful, Robust and Easy to Use

Featuring those classic sounds found in the original, MXR have added an EQ section and other upgrades to take the powerful Micro Amp+ to the next level.

Easy to Use

Dial-up as much as +26dB worth of Gain, and then finely sculpt your boosted signal with the added EQ controls. With the Bass and Treble set to Noon you get that classic Micro Amp sound, but if you want to explore your tonal opportunities further.... well, you know the drill.

Upgraded Circuitry

The Micro Amp+ is equipped with low-noise op amps, meaning that you won't get any unwanted noise at high volume levels. Add to this a True Bypass switching system, rugged enclosure, and components with renowned MXR durability, and you have yourself a phenomenal little boost pedal that's ready to gig right out of the box!

MXR Micro Amp+ Highlights

  • Premium-quality Boost pedal from MXR
  • An upgrade to the classic M233 MXR Micro Amp
  • Treble, Gain, and Bass control knobs
  • True Bypass switching
  • Up to +26dB of Gain boost

MXR Micro Amp+ Technical Specs

  • Input Impedance: 1 M"
  • Output Impedance: 470 "
  • Max Output Level: +7 dBV
  • Noise Floor: -87 dBV
  • Tone Controls: BASS ±14 dB, 33 Hz; TREBLE ±11 dB, 8.4 kHz
  • Gain Control: +0.5 dB to +26 dB
  • Frequency Response: 20 Hz to 20 kHz, ±0.75 dB
  • Bypass: True Hardwire
  • Current Draw: 6.5 mA
  • Power Supply: 9 Volts DC (Battery or Adapter)
More Information
Manufacturer MXR
SKU 174337
Shipping Weight (kg) 1.000000
Effects Boost
Warranty 2 years


We know you want to get your gear as quickly and as safely as possible, Next Working Day Delivery to UK Mainland Addresses, on all IN STOCK items, if ordered before 3pm. This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you.

  • Orders under £99: £4.99 Delivery Charge
  • Orders over £99: Free Next Day DPD Delivery (When Ordered before 3pm)
  • Weekend Delivery (Saturday-Sunday): £9.99 (When Ordered before 3pm Friday)
  • Heavy Items (over 40kg): £39.99 Pallet Service







Rather not wait in for the delivery? Don’t worry, we’ve got you…In Stock items can be ordered and paid for in-advance Online via our Click & Collect service. As long as if it's in stock at your chosen branch, you can collect the item within 2 hours*.



If you have bought something In-Store or Online and want to return it as unwanted, you have 30 days from when you receive the goods to contact our PMT experts either by phone or email to return your item.

We can offer you a refund if you return your item within 30 Days from purchase date and with 100% perfect packaging. 


Please Note - We cannot accept unwanted returns on microphones, any in-ear earphones or monitors, and any other items that touch your mouth, nose or inner ear if you have removed the hygienic packaging.