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Low Power (≤30W per channel)

2 x 25Watt Class D Audio Amplifier Board - TDA7492[105]

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This low power stereo audio amplifier board delivers 25W output power per channel into a 6Ohm load based on Class D topology and Tripath-style Texas Instruments TDA7492 chip, featuring low power consumption and high efficiency up to 93%. Compact size, easy installation and low power output makes this audio amplifier board suitable for home audio, DIY audio, toy audio and demanding industrial applications. A DC14V – 19V power supply is required.

High Quality Audio Performance

By means of dedicated PCB layout design and engineers’ attentive debugging, this low power audio amplifier board features high audio performance, whose SNR reaches 91dB and THD+N performs well as 0.05% @ 6Ohm, 1W, 1kHz.

Four Stages Fixed Gain Adjustable

AA-AB32165 provides four stages gain for customers’ choice. You can set the gain according to your requirements through the switches provided on the board. The four stages are 21.6dB, 27.6dB, 31.1dB and 33.6dB.

High Reliability and Long Service Time

An optimized heatsink is mounted atop the audio amplifier for maximum heat dissipation. Full protection circuit, like over temperature protection and overcurrent protection, is equipped on this board for high reliability and long service time.

Easy for Installation

Four screw holes provided make this amplifier board easy for installation and quick for integration in any cabinet. Thanks to the pre-mounted industrial terminal interfaces, all you need to do is to plug in cables for connection, without any demand of soldering, which is swift and convenient. Power indicator is provided on board for customers to have an overview of the real-time condition of the amplifier board. This audio amplifier supports mute and standby control.

Package Includes

1pc AA-AB32165

  • StyleBoards
  • Number Of Channel(s)2
  • Output Power25
  • Size4.8 x 3.6 inches (121.92mm x 91.44mm)
  • ChipsetTDA749x
  • Heat DissipationHeat Sink
  • Supported Parallel Bridge Tied Load ModeNO
  • inputSingle ended Line-in,
  • Power Voltage14V-19V
  • Output Power
  • 25W@6Ohm 16V DC THD+N 10%
  • 20W@6Ohm 16V DC THD+N 1%
  • Gain Adjustable
  • Block Terminal and Banana (optional)
  • Mute and Standby Control
  • Over current Protection
  • Over temperature Protection
  • Optimized Heatsink Design
  • 4-screw Easy Installation
  • Weight: 309g/ 0.68 lbs
  • Size: 4.80 x 3.60 x 0.94 inches
ParameterConditionsMin.Typ. Max.Units
Power Supply-141619VDC
Idle PowerSTBY Floating-0.560.61W
Standby PowerSTBY Connected to GND-0.0960.1W
Maximum Current 50W @ 6Ohm -3.5-A
Efficiency2 X 25W @6Ω,powered by 16V DC 879093%
Minimum Load Impedance--4-Ω
Switching FrequencyNo Load300 350400KHz
GainSW1 ON, SW2 ON20.621.622.6dB
SW1 ON, SW2 OFF26.627.628.6dB
SW1 OFF, SW2 ON30.131.132.1dB
SW1 OFF, SW2 OFF32.633.634.6dB
Input SensitivityGain 21.6dB1.381.481.58V
Gain 27.6dB0.660.730.80V
Gain 31.1dB0.450.490.53V
Gain 33.6dB0.320.370.42V
Input Impedance-4860-
Output Power@6Ω THD+N 1%-20-W
@6Ω THD+N 10%-25-W
Bandwidth @ -3dB@6Ω, Gain21.6dB20-20K   Hz
THD@6Ω,1W,1KHz, Gain 21.6dB-0.05-%
Output Noise LevelA-weighting, Gain 21.6dB170180190uV
SNR20W @6Ω, THD+N 1%, Gain 21.6dB-91-dB


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