Mini 3-input Audio Amplifier with Mic Mixer

40 Watt Power Amp supporting 70V or 100V
MPN: AP3DBL  UPC: 814556016077


The KanexPro AP3DBL is a 3-Input 40-Watt audio amplifier supporting 70V or 100V. It comprises of 3 switchable inputs (RCA, 3.5mm and TOSLINK) for quick switching and sound reproduction. The audio amplifier supports MIC mixing and EQ control perfect for classrooms, conference rooms, lecture halls and restaurants.


  • Fast switching 3 audio inputs (1 digital, 2 analog)
  • One 3-level MIC input with mixer function
  • 40 Watt amplifier output at 70V or 100V
  • Ducking function for auto detect
  • ID loop for RS232 looping control
  • Adjustable volume with Bass & treble
  • Locking power supply
  • Control via front panel, RS232 & IR control
  • Supports Dual-mono output
  • Built-in Microphone mixer (separately controllable)
  • Line audio output, with volume controllable.
  • MIC input supports 48V phantom power
  • Supports balanced/ unbalanced signals
  • Ultra low inrush current
  • Convection cooled, antistatic case design
  • LED indicator, for power and operating status
  • Internal Universal power adaptable (100-240 volt AC, 50/60Hz)



Audio Input:

  • 2 x stereo audio (RCA, 3.5mm)
  • 1 x digital audio (TOSLINK)
  • 1 x MIC (captive screw connector)

Audio Output:

  • 1x mono amplifier (3-pin captive screw connector)

Output Type: 40W, 70V or 100V

Input Impedance for Inputs 1&2: >10KΩ

Output Impedance: 50Ω/stereo, 4~8Ω/Amplifier

Audio General:

Frequency Response:

  • Input: 120Hz ~ 20KHz
  • Output: CMRR >70dB@20Hz~20KHz

Signal to Noise Ratio:  80dB at maximum output

Bandwidth: 120Hz ~ 20KHz

Stereo Channel Separation:

  • Input: >75dB@20Hz to 20KHz
  • Output: THD + Noise 1%(1KHz), 0.3%(20KHz) at nominal level

Voltage Gain: 32dB

Mic Input Impedance: 48V: 35 Kilo Ohms

Mic: 10 Kilo Ohms

Line: 75 Kilo Ohms

Mic Audio Detection Delay: < 1ms

Common Mode Rejection Ratio: >70dB (20Hz- 20KHz)


  • RS-232 Serial
  • 9-pin female D connector
  • IR remote sensor

Pin Configurations:

  • 2 = TX, 3 = RX, 5 = GND

TCP/IP control through TCPRS2

Power consumption: 3.6 Watts

Power supply: 24V DC

Dimensions: 1.5"x3.78"x3.45" (HWD)

Weight: 0.67 lbs (0.3Kg)

Warranty: 3 Years parts & labor 

Industry Standards & Certifications: 

CE, FCC, UL certified 



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