Behringer

Behringer MA400 Micromon Monitor Headphone Amplifier

4.3 (1172 reviews)
XLR

Personalized Monitoring in a Compact Package The Behringer Micromon MA400 is an ultra-compact monitor headphone amplifier designed for musicians and audio professionals. This versatile device allows you to create a custom monitor mix by blending a microphone input with a monitor feed from your ma...

$24.90*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

Personalized Monitoring in a Compact Package

The Behringer Micromon MA400 is an ultra-compact monitor headphone amplifier designed for musicians and audio professionals. This versatile device allows you to create a custom monitor mix by blending a microphone input with a monitor feed from your main mixer. With its XLR Thru jacks and compatibility with both 1/4" and 1/8" headphones, the MA400 provides a convenient solution for hardwired IEM applications.

Specifications:

  • Brand: Behringer
  • Model: MA400
  • Type: Monitor Headphone Amplifier
  • Input: XLR connector
  • Impedance: 2 kOhms (balanced)
  • Max Input Level: -18 dBu
  • CMRR: Typically 40dB, Greater Than 50dB at 1 kHz
  • Bandwidth: 15Hz-25 kHz
  • Power Supply: 12V DC adapter included

Key Features

Ultra-compact monitor headphone amplifier for studio and stage applications

Personal 'more me' mixer -- mix a mic and a monitor signal and hear them via headphones

Flexible Mic In and Mic Through XLR connectors with Ground Lift switch

Stereo Monitor input with dedicated Monitor Level control and Mono/Stereo switch

High-power headphone output on 1/4' and 1/8' jack connectors

Specifications

Product Type
Monitor Headphone Amplifier
Application
Studio, Stage
Inputs
Mic In (XLR), Stereo Monitor Input
Outputs
Mic Through (XLR), Headphone Output (1/4" and 1/8" jacks)
Controls
Monitor Level, Ground Lift Switch, Mono/Stereo Switch

Pros & Cons

👍 Pros

  • This ultra-compact design makes it highly portable and space-efficient for both studio and stage use.
  • Functions as a personal "more me" mixer, allowing users to blend their microphone and monitor signals for personalized headphone monitoring.
  • Features flexible Mic In and Mic Through XLR connectors, offering versatile routing options for microphones.
  • Includes a Ground Lift switch, which can help eliminate hum and noise caused by ground loops in audio setups.
  • Equipped with a stereo Monitor input with a dedicated level control and a Mono/Stereo switch for tailored monitoring.

👎 Cons

  • The "ultra-compact" size might mean smaller controls that are less ergonomic for some users during live adjustments.
  • While offering mic and monitor mixing, it's a dedicated headphone amplifier, not a full-featured mixer for multiple instruments.
  • The high-power headphone output is beneficial, but the specific power rating (e.g., mW per channel) is not provided, making it difficult to assess its capability for very high-impedance headphones.
  • The description does not specify if the unit is battery-powered or requires an external power supply, which affects portability and setup.
  • The "monitor signal" input is described in general terms, potentially requiring users to verify compatibility with their specific monitor feed.

Frequently Asked Questions

The Behringer MA400 is an ultra-compact monitor headphone amplifier designed for studio and stage applications, acting as a personal "more me" mixer.
Yes, the MA400 allows you to mix a mic and a monitor signal, and it includes a dedicated Monitor Level control for precise adjustments.
It features flexible Mic In and Mic Through XLR connectors, providing versatile options for connecting your microphone.
Yes, the unit includes a Ground Lift switch on its XLR connectors, which can be useful for reducing hum caused by ground loops.
The Behringer MA400 offers a high-power headphone output on both 1/4" and 1/8" jack connectors, accommodating various headphone types.
Yes, the stereo Monitor input includes a Mono/Stereo switch, allowing you to select your preferred monitoring mode.