GA Products

MA50 Mini Amplifier

The MA50 has been designed specifically for use in permanent audio installations where high reliability and premium sound quality are required. The compact size and reliable design with power saving feature, make this amplifier perfect for situations were power will be permanently on for indefinite periods of time.
With a highly efficient class D amplifier capable of delivering 2 X 25W into 8 ohms or 1 X 50W into 4 ohms the MA50 is the ideal product for a wide variety of installations.

Typical Applications:

Meeting room A/V installations
Classroom A/V installations
Interactive kiosks
Point Of Sale
In-vehicle sound systems
Voice alarm systems
Intruder warning systems


Cost effective
Highly efficient 2 X 25W Class D amplifier
Compact unit with integral fixing points
Detachable screw terminals for ease of installation
Bridgeable to 50W mono
Power save functionality
Separate attenuation for left and right channels
Power Supply included
Separate Bass and Treble controls
Protected against short circuits and overloads
3.5mm Jack or Screw terminals for Line input
2.1mm DC jack or Screw terminals for PSU connections


 Operating Voltage 12-24V DC, 3A
 Current Draw Standby <35 mA
  On with no signal <70mA
  Full power 3A max
 Output (12V supply) 2 X 15W into 4 ohms
  1 X 30W into 4 ohms
 Output (24V supply) 2 X 2 5W into 8 ohms
  1 X 50W into 4 omhs
 Dip switch options 1 – Mono or Stereo
  2 – Low Pass Filter
  3 – Left channel attenuation
  4 – Right channel attenuation
 Auto power up level 30mV or 150mV (depending on attenuation dip switch)
 Power up from standby 2 seconds
 Auto shutdown time No input signal detected for 5 minutes
 Connections DC – 2.1mm DC Jack or Screw terminals
  Speaker Outputs – Screw terminals
  Line In – 3.5m m Stereo Jack or Screw terminals
 Frequency Response 20Hz to 25K Hz
 Status indicators Green On – Amplifier On
  Red On – Amplifier Standby
  Red Flashing – Overheat
  Red and Green On – Powering up or down
 Dimensions 115mm X 115mm X 36mm (W X D X H)