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InterM PA-2312


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Product Overview

120W x 2-Channel Commercial Power Amplifier

The PA-2312 is a reliable, heavy-duty dual-channel public address amplifier designed for demanding sound system applications. The unit features XLR balanced inputs with front panel-mounted signal level controls. Parallel male XLR connectors enable convenient amplifier linking in multiple amplifier installations. Automatic thermal protection circuitry is provided and an “idling” circuit protects against thermal runaway. A two-speed fan helps ensure reliability, switching to high-speed when the amplifier is under heavy load. Switchable high-pass filters help provide low frequency protection for speakers. Front panel LEDs indicate output levels of -40dB, -10dB and clipping, as well as protection circuit activation. A ground-lift switch is provided to isolate signal ground from chassis ground. The outputs are 4Ω, 70V, or 100V (output transformer varies depending on country). The units can be powered by 100-120VAC/ 220-240VAC (depending on country requirements), or 24VDC, enabling the unit to be used as part of a portable PA system, or connection to a standby power supply for emergency operation. The unit is packaged in a 5.25" high (3RU) rack-mount enclosure.



  • 120W RMS per Channel
  • Front Panel-Mounted Gain Adjustment
  • LED Output Level Indicators
  • LED Indicators for Protect
  • 4Ω, 70V, 100V Outputs
  • Balanced XLR Inputs
  • Link Connector On Inputs for
  • Multiple Amplifier Operation
  • Switchable High-Pass Filter
  • Two-Speed Cooling Fan
  • Frame/Float Ground Switch
  • Automatic Thermal Protection
  • AC Mains or 24VDC Powered
  • Rack Mount (3RU)


  • Power Output: 120W /Channel, 23V/4Ω ; 70V/14Ω ; 100V/28Ω
  • Frequency Response: 70Hz - 18kHz
  • THD: < 1%
  • High Pass Filter (400Hz): -6dB/Oct
  • Signal-to-Noise Ratio: >95dB
  • Input Sensitivity/Impedance: 1V/10kΩ , BAL
  • Input Level Adjustment: -12dB - 0dB
  • Power Source: 100-120VAC or 220-240VAC, 50/60Hz
  • Power Consumption: 290W
  • Weight: 53.6lbs / 20kg
  • Dimensions (W X H X D): 19" x 5.25" x 11" / 482mm x 132mm x 280mm

Product Downloads

  • PA-2312 Data Sheet PDF 0.3 MB
  • PA-2312 User Manual PDF 0.7 MB


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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the PA-2312.