MP-A3B is a 40W Power Amplifier (Class-D) with output alternatively at 70V or 100V. It has 2 stereo inputs (1x3.5mm jack for line in, 2xRCA for L&R), 1 digital input & 1 balanced MIC. It is integrated with powerful functions, including ducking function, EQ control, MIC mixer etc, and MIC input supports 3 levels with condenser MIC, dynamic MIC & line audio input. As for power amplifier we have normally voltages at 70V and 100V for different countries, but MP-A3B is designed to integrate with both voltages to meet different requirements.

  • Mono audio output at 40Watt.
  • Switchable between 70V and 100V.
  • Ducking function.
  • 16 ID codes for controlling between different MP-A3B amplifiers.
  • 3-level MIC input, supports condenser microphone, dynamic microphone and wireless microphone.
  • MIC port can support balance/unbalance signal, suppress the external noise effectively.
  • Two stereo audio inputs and one digital audio input, switchable by button, IR remote & RS232.
  • Volume/Bass/Treble controllable by buttons, IR remote & RS232.
  • Fast switching speed for good performance.
  • Convection cooler, fan is not needed.
  • LED indicator, for power and working status.
  • Antistatic case design to provide good protection for long-term and stable performance.
Audio Input Audio Output
Input (2) stereo audio
(1) MIC
(1) Digital fiber audio
Output (1) mono amplifier
Input Connector (2) RCA, (1) 3.5mm jack
(1) 3-pole 3.81mm captive screw connector
(1) SPF fiber connector
Output Connector (1) 3-pole 3.81mm captive screw connector
Input Impedance >10KΩ Output Type Constant voltage 70V or 100V
Audio General
Frequency Response 120Hz ~ 20KHz CMRR >70dB@20Hz~20KHz
SNR 80dB (Max) Bandwidth 120Hz ~ 20KHz
Rated Power Output 40Watt @8Ohms THD + Noise 1%@1KHz, 0.3%@20KHz at nominal level
Voltage Gain 26dB
Control Function
RS232 Control (1) 3-pole 3.81mm captive screw connector Front Panel Control Buttons
ID Code Control 16 ID codes for control
Optional IR remote & TCP/IP controlled by PTNET(PTN's programmable interface)
Temperature -10 ~ +40℃ Humidity 10% ~ 90%
Power Supply DC 24V power adapter Standby Power
Case Dimension W130 x H44 x D144mm (1U high) Product Weight 0.86Kg