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MA455 Multi-Zone On-Wall 4 Channel Amplifier

Quick Overview

The Dayton Audio MA455 Multi-Zone On-Wall Amplifier provides four channels of distributed audio functionality in a convenient design. Featuring four input channels, each of the MA455's channels is assignable to one of four zones for a multi-room audio system. The compact design, complete with a lockable security cover, makes the MA455 perfect for small businesses, stores, restaurants, bars, and office spaces.

Product Highlights

  • Four input, four zone amplifier perfect for multi-room audio in offices, businesses, restaurants, and retail stores
  • Compact and easy to install on-wall design with a lockable security cover to prevent tampering
  • Individualized sonic character with built-in channel tone, volume, source, and EQ control for each input
  • Features an internal media player with USB, SD, Bluetooth, and FM radio playback options that can be assigned to any combination of zones
  • On board playback and IR remote control functionality provides total system control

Product Manuals / Spec Sheets / Downloads

Dayton Audio MA455 User Manual

The Dayton Audio MA455 delivers multi-zone Class AB amplification in an easy-to-use, set-and-forget design. With each of the amp's four input channels assignable to one of four zones, the MA455 is ideal for small businesses, stores, or restaurants that need a multi-room audio system. In a compact and secure housing, the MA455 provides reliable audio performance and a convenient and straightforward interface.


Versatility Across Zones


Delivering four input channels, the MA455 gives you the ability to connect multiple sources for custom multi-zone audio. Each input channel provides an RCA and 1/4" line input as well as individual bass and treble controls. In addition to flexible input options, the MA455 has a built-in media player that includes USB and SD MMC ports, Bluetooth, and FM radio. The media player can be assigned to any combination of the four output zones and features playback controls via the front panel and included IR remote control.

The MA455 not only has versatile input options but also gives you flexibility in output options. Each zone has a mono RCA line out for use with an external amp and a phoenix-type connector to connect directly to your speakers. Needing a total speaker impedance of at least 4 ohms per zone, the MA455 allows you to integrate into almost any existing speaker system.


Tailor Your Sound


Each input channel has an individual volume, bass, and treble controls, giving you control over the sound sources. Accessible via the included IR remote control, the MA455 also provides seven EQ presets including normal, rock, pop, classical, jazz, country, and bass. When using smaller speakers, the MA455 also has an 80 Hz high-pass filter for each zone output to restrict source bandwidth delivered to your speakers.


Secure, Compact Design


The all-in-one design of the MA455 delivers all of the functionality that you need for multi-zone audio, all housed in a compact, simple to install on-wall form factor. With the streamlined design, the amplifier is ideal for set-and-forget installations. In addition to the compact size, the MA455 also features a lockable security cover so that you can keep your settings consistent without fear of tampering.


Delivering on All of Your Audio Requirement


The MA455 delivers all of the functionality and quality you would expect from Dayton Audio in a simplified design. With convenience and function at the forefront of design, the MA455 is perfect for use in restaurants, bars, small businesses, stores, office spaces, and other applications in need of easy-to-use multi-zone audio.



Amplifier type: Class AB
Power output (RMS): 4 x 55W @ 4 ohms, all channels driven
Speaker impedance: 4 ohms minimum per zone
Frequency response: 20-20,000 Hz
Channel input connections: Stereo RCA line, 1/4" line
Output connections: Mono RCA line / zone, phoenix type
Channel controls: Volume, zone selection, bass / treble, mic / line switch
Zone output controls: Volume, high-pass filter
Mic input sensitivity: -35 dB
Mic input impedance: 2 kohms
Line input sensitivity: -3 dB
Line input impedance: 20 kohms
THD: <0.1% @1 kHz, 0 dB
Mic SNR: <75 dB rated output
Line SNR: <80 dB rated output
Line output: +3 dB
Bass & treble control: ±12 dB
High-pass filter: 80 Hz
Media player: USB, SD, Bluetooth, FM radio
Media player controls: Play / pause / folder, repeat, track select
Remote control functions: Power, stop, mute, repeat, EQ, play / pause, track select, volume, skip, media player mode
Power supply: 110/220 VAC, 50/60 Hz
Certifications: CE, RoHS
Includes: Amplifier, 4 x screws and anchors, IR remote control, IEC power cable
Weight: 18.7 lbs.
Dimensions: 18.7" H x 15.1" W x 3.7" D


Model Number MA455
List Price $531.84
Color White
Unit of Measure Each
UPC 848791007439
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) --
Product Weight 18.7 lbs.
Product Height 18.7"
Product Width 15.1"
Product Length --
Product Depth 3.7"
Impedance 4 ohms minimum per zone
Power Output (RMS) 4 x 55W @ 4 ohms, all channels driven
Frequency Response 20-20,000 Hz
Dimensions 18.7" H x 15.1" W x 3.7" D