5-Channel Commercial 100 Watt Mixer/Amplifier


The GA5100 rack-mountable 2 zone public address amplifiers offer users with an easy and convenient solution for public announcement, relay and other commercial applications. Input is achieved via three combo jacks for microphones plus two line-level input channels. Line input 1 accepts RCA and 1/4″ connectors while line 2 accepts RCA and 1/8″ mini-stereo jacks. Onboard USB playback allows users to play audio directly from USB flash drives, while built-in chime alert and announcement tones enable for quick and easy emergency talkback. Offering 100 Watts split between the 4 ohm output and two zones, the GA5100 are the most flexible yet powerful public address amplifiers available in today’s commercial/installation pro audio market.

GA5100_100 Watt
100 Watt (RMS) of power at 4 ohms, 100V

The GA5100 offers 100 watts (RMS) of power. The wiring of the system simply determines your output mode; whether your system is 100V, 70V constant voltage, or an 8 ohm low-impedance setup, the Asystems GA5100 can be wired to suit your needs.

GA5100_3 microphone
3 microphone, 2 line input channels

The GA5100 features 5 independent input channels with independent level controls. There are a total of 3 microphone and 2 line input channels The GA5100 features inputs through RCA, XLR, ¼”, mini-stereo connectors.

GA5100_Playback of MP3
Playback of MP3 or WMA audio files directly from USB flash drives

Insert digital audio into your setup through the GA5100 powered mixers. Insert a properly formatted USB flash drive into the USB port to playback MP3 or WMA files through the system.

24V battery connector available in case of power outage

Power loss is a real concern when using installed systems. Particularly in the case of installed emergency systems where the loss of audio and emergency alerts could be dangerous, a battery powered system is vital. This 24V port is for connection of batteries, and can be used to charge the battery if necessary.

  • 100 Watt (RMS) of power at 4 ohms, 100V
  • 3 microphone, 2 line input channels
  • Microphone input via combo jacks
  • Line 1 input offers stereo RCA and 1/4” TRS
  • Line 2 input offers stereo RCA and mini-stereo
  • Screw terminal speaker output connectors
  • Built-in echo effect with volume control
  • Stereo RCA tape in / line out connectors
  • Alert chimes and ‘announce’ tones built-in
  • Battery connectivity for emergencies in power-outages
  • 6-segment LED VU meter on output
  • Front panel system EQ with treble and bass controls
  • Individual zone output select buttons
  • Playback of MP3 or WAV audio files directly
  • 1/4” TRS link inputs and outputs
  • Removable rack ears included
  • 2 standard rack units high
Front Panel

The front panel controls of the GA5100 includes a power switch and five rotary gain controls for each input channel, plus a master level control that is accompanied by bass and treble controls. The system also features alert chines and announcement buttons. An echo level control is also available. A button for each of the two zones is also available. A USB player is imbedded with a small display, play button, forward and reverse buttons and a stop/menu button. There is also a 5-segment master level meter.

Rear Panel

Power Amplifier (Watts) RMS
(at 4 Ohms) THD <0.5%  100W
(at 8 Ohms) THD <0.5% 60W
Frequency Response 50Hz – 18KHz
Speaker Outputs
Low Impedance (8Ω / 4Ω) European block (screw type)
100V Matching Output Screw type (two-zone)
Mic Input 3 x combo jacks
Line Input 2 x RCA pairs
1 x 1/4” TRS + 1 x Mini Phone Jack
Tape In ST RCA w/ Volume control
Link in / Link out Yes (via 1/4” Phone jack)
USB Player USB 2.0 with LCD Display
Compatible File Types .WAV / .MP3
Line Output 1 x Stereo RCA, Link out via 1/4” phone jack
Master Section Volume with Bass and Treble control
Level Indicator 5 x LED
Alert Chime One button
Announce One button
Echo / Effect Echo Level control
Speaker Out Selector Zone 1 and Zone 2 buttons
24V Battery Connector Yes
Dimensions (W x H x D) 437x 89 x 260 mm (17.2” x 3.4” x 10.2”)
Weight 7.54 Kg (16.6 lbs)

User’s Manual (English / Español): um_GA5100_en_es

Data Sheet (English): ds_GA5100_en.pdf