---
product_id: 221182939
title: "MXR M81 Bass Preamp"
brand: "mxr"
price: "€ 643.29"
currency: EUR
in_stock: true
reviews_count: 5
category: "Mxr"
url: https://www.desertcart.de/products/221182939-mxr-m81-bass-preamp
store_origin: DE
region: Germany
---

# Separate input & output level controls 3-band EQ with sweepable mids Studio-quality Direct Out MXR M81 Bass Preamp

**Brand:** mxr
**Price:** € 643.29
**Availability:** ✅ In Stock

## Summary

> 🎸 Elevate your bass tone game—compact, clean, and unmistakably pro.

## Quick Answers

- **What is this?** MXR M81 Bass Preamp by mxr
- **How much does it cost?** € 643.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/221182939-mxr-m81-bass-preamp)

## Best For

- mxr enthusiasts

## Why This Product

- Trusted mxr brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Phase 90-sized pedal packs studio-grade preamp and direct out without crowding your board.
- • **Dual-Level Control:** Independent input and output knobs for flawless gain staging and dynamic control.
- • **Ground Loop Eliminator:** Built-in ground lift switch keeps your tone clean and hum-free in any environment.
- • **Pro-Grade Connectivity:** XLR and 6.35mm jack outputs ensure seamless integration with any rig or live setup.
- • **Precision Tone Sculpting:** Sweepable midrange EQ lets you carve your signature bass voice with surgical accuracy.

## Overview

The MXR M81 Bass Preamp is a compact, studio-quality bass preamp pedal featuring separate input/output level controls, a 3-band EQ with sweepable midrange (250Hz–1kHz), and a versatile Direct Out for professional stage and studio use. Designed to deliver pristine, high-headroom tone in a space-saving format, it includes a ground lift switch to eliminate hum and supports both XLR and 6.35mm outputs, making it a must-have for bassists seeking precise tonal control and seamless rig integration.

## Description

The MXR Bass Preamp combines a pristine bass preamp with a studio-quality Direct Out in a Phase 90-sized box, providing clear tone without hogging precious pedalboard space. Use it to add a new voice to an old passive bass, sweeten up any amp, or put some special sauce on a particular song. Dial it in just the way you want it and send it straight to the house—pre or post-EQ—with the built-in Direct Out. The Bass Preamp features separate INPUT and OUTPUT level controls and a 3-band EQ section with sweepable midrange—from 250hz to 1khz—for extensive tonal flexibility. It’s all delivered super clean with high headroom thanks to our own Constant Headroom Technology, and you can use the PRE/POST EQ switch to set whether or not your Direct Out signal is affected by the Bass Preamp’s EQ section. And of course, the Bass Preamp features a GROUND LIFT switch in case you encounter ground loop hum. The Bass Preamp is factory preset to operate in ¼” out buffered bypass and Direct Out active. For players who only want to use the ¼” out, there are two internal switches that disable the Direct Out and ¼” out buffered bypass for true ¼” out bypass mode.

Review: Great tone shaping. - Awesome pedal. Brings new tonal life to my 70s Fender Jazz bass. Love it.
Review: Il top per il bassista vecchia maniera - Pedale fantastico, totalmente neutro, per chi vuole sentire la voce del proprio basso senza simulazioni varie.

## Features

- Separate INPUT & OUTPUT level controls
- 3-band EQ section with sweep able midrange
- Studio-quality Direct Out

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00I3TOXVM |
| Amplifier Type | Solid State |
| Best Sellers Rank | #66,556 in Musical Instruments ( See Top 100 in Musical Instruments ) #5 in Bass Guitar Amplifier Preamps |
| Brand | MXR |
| Brand Name | MXR |
| Colour | Green |
| Compatible Devices | Double Bass |
| Connector Type | XLR or 6.35mm Jack |
| Country of Origin | USA |
| Customer Reviews | 4.8 out of 5 stars 189 Reviews |
| Enclosure Material | Metal or Durable Plastic |
| Global Trade Identification Number | 00710137072770 |
| Item Type Name | Preamps |
| Item Weight | 0.5 Pounds |
| Item Weight Unit of Measure | 0.5 Pounds |
| Manufacturer Part Number | M81 |
| Material | Metal or Durable Plastic |
| Model Name | 11081000001 |
| Model Number | M81 |
| Number of Items | 1 |
| Output Channel Quantity | 2 |
| Output Wattage | 15 Watts |
| Power Source | Corded Electric |
| Sound Profile | Versatile, adjustable EQ for shaping tone |
| UPC | 710137072770 |

## Product Details

- **Brand:** MXR
- **Compatible Devices:** Double Bass
- **Material:** Metal or Durable Plastic
- **Output Wattage:** 15 Watts
- **Item Weight:** 227 g

## Images

![MXR M81 Bass Preamp - Image 1](https://m.media-amazon.com/images/I/71nSQxvoIXS.jpg)
![MXR M81 Bass Preamp - Image 2](https://m.media-amazon.com/images/I/61ScmcEhWhL.jpg)
![MXR M81 Bass Preamp - Image 3](https://m.media-amazon.com/images/I/61snphWbM6L.jpg)
![MXR M81 Bass Preamp - Image 4](https://m.media-amazon.com/images/I/61FUIjrYn8L.jpg)
![MXR M81 Bass Preamp - Image 5](https://m.media-amazon.com/images/I/61kdaFS5oiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great tone shaping.
*by T***R on 7 April 2025*

Awesome pedal. Brings new tonal life to my 70s Fender Jazz bass. Love it.

### ⭐⭐⭐⭐⭐ Il top per il bassista vecchia maniera
*by D***G on 17 March 2026*

Pedale fantastico, totalmente neutro, per chi vuole sentire la voce del proprio basso senza simulazioni varie.

### ⭐⭐⭐⭐⭐ Gives me a very satisfying amount of control of my bass tone
*by A***R on 31 December 2023*

I got this for playing a few different bass guitars direct and with headphones, so I can't speak to what this device can do for playing live, but I absolutely love it. I have an Ibanez Mikro bass (extra short scale) that I improved by adding Seymour Duncan pickups, but it still sounded a bit thin to my ears. This preamp completely kicks it up to a level of power and versatility that vindicates my sticking with this somewhat silly little bass. I can boost the low and low-midrange without losing crispness and clarity. And I don't have to use the tone controls on the bass, which always strike me as unsatisfactory. I'd previously tried a "bass boost" pedal that was basically equivalent to overusing the tone control and then amplifying that low but dead sound to dubious effect. Another of my basses is an entry level fretless with stock pickups that I haven't upgraded yet. This pedal does greatly improve the sound, but the effect does seem to be dependent on starting with quality pickups for the best result, so it doesn't magically fix an inherently poor tone. My third bass is an old 60s era Japanese EB-2 clone, with one of those lovely mudbucker pickups. That pickup is a force of nature. It basically turns you into a god of thunder, but it sure is muddy. I've always wanted to find the right way to enhance the high end a bit to give the sound a bit more definition or something. This pedal enables me to do that very nicely. Moral of story: if you keep your bass's tone control all the way open, you can use this pedal to shape the sound without losing anything, as long as your pickups are providing a good enough starting point. There is a slight learning curve, such as using the dip switches hidden behind the battery cover, learning whether to use the direct output or not, but it's not difficult. The only problem is that the pedal does not come with a proper manual that explains any of this, so you've got to search online for the manual.

## Frequently Bought Together

- Jim Dunlop Power Amplifier (11081000001)
- D'Addario Accessories PW-CT-9V DC Power Adapter – Pedalboard Power Supply - Minimize Need to Change Batteries on Pedalboard and Other Devices Requiring 9V – Guitar Pedal Power Supply
- MXR Patch Cable 6 in|15 cm - 3 Pack (3PDCP06)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-08-22*