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Mid Power(30-300W per channel)

4 x 100Watt Class D Audio Amplifier Board - TDA7498[113]

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Mean Well SE-450-36 36V 450W AC/DC Switching Power Supply




This 4CH mid-power audio amplifier board is capable of delivering 100W output power per channel into a 6Ohm load based on Class D topology and TDA7498 amplifier IC, featuring high efficiency up to 92% and high sound quality with low distortion and low noise level. Easy installation, mid power output and high reliability make this audio amplifier board suitable for home audio, DIY audio, car audio and demanding industrial applications. A DC14V – 36V power supply is required.

4-channel Audio Amplifier Board

This audio module provides 4 output channels, each of which delivers 100W output power into a 6Ohm load, making it applicable to audio 4.0 systems.

High Quality Audio Performance

By means of dedicated PCB layout design and engineers’ attentive debugging, this mid-power audio amplifier board features such high audio performance that you can get pure enjoy of the music, whose SNR reaches 95.38dB and THD+N performs well as 0.0409% @ 6Ohm, 1W, 1kHz.

High Reliability and Long Service Time

A low noise cooling fan together with an optimized robust heatsink are mounted atop the amplifier board to effectively decrease the temperature. 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. Active indicator is provided on board for customers to have an overview of the operating status of the amplifier board.

Four Stages Gain Adjustable

This audio module provides four stages gain for customers’ choice as 25.6dB, 31.6dB, 35.6dB and 37.6dB. You can select the most suitable stage for your application. The switch among the four stages gain is achieved by the different combination of the switches on the board, no need of complex operations.

Package Includes

1pc AA-AB33184

  • StyleBoards
  • Number Of Channel(s)4
  • Output Power100
  • Size6 x 4.5 inches (152.4mm x 114.3mm)
  • ChipsetTDA749x
  • Heat DissipationHeat Sink & FAN
  • Supported Parallel Bridge Tied Load Mode/
  • inputSingle ended Line-in,
  • Power Voltage14V-36V
  • Output Power
  • 100W@6 Ohm 36V DC THD+N 10%
  • 70W@6 Ohm 36V DC THD+N 1%
  • Active Indicator
  • Optimized Heatsink Design
  • Low Noise Cooling Fan
  • Overcurrent Protection
  • Overtemperature Protection
  • 4-screw Easy Installation
  • Weight: 580g/1.28 lbs (±10%)
  • Size: 6.00 x 4.50 x 1.30 inches
Specifications typical @ +25℃, powered by 36V DC, unless otherwise noted. Specifications subject to change without notice.
Parameter Conditions Min. Typ.  Max. Units
Power Supply - 14 36 - VDC
Idle Power SD Floating, FAN ON - 7.9 12 W
SD Floating, FAN OFF - 5.4 8 W
Standby Power SD Connected to GND, FAN OFF - 2.2 5 W
Maximum Current 400W @ 6 Ohm - 12.3 - A
Efficiency 100W @ 6 Ohm 87 - 92 %
Minimum Load Impedance - - 6 - Ω
Switching Frequency SD Floating - 360 - KHz
Specifications typical @ +25℃, powered by 36V DC, unless otherwise noted. Specifications subject to change without notice.
Parameter Conditions Min. Typ. Max. Units
  Gain (Adjusted by SW1 & SW3) K1 ON, K2 ON - 25.6 - dB
K1 OFF, K2 ON - 31.6 - dB
K1 ON, K2 OFF - 35.6 - dB
K1 OFF, K2 OFF - 37.6 - dB
Input Sensitivity(RMS) @ 6 Ohm, 100W, 1Khz - 1.352 - V
Input Impedance - - 33 -
Output Power @ 6 Ohm, THD+N 1% - 70 - W
@ 6 Ohm, THD+N 10% - 100 - W
Bandwidth @ ±3dB @ 6 Ohm 20 - 20K    Hz
THD @ 6 Ohm, 1W, 1Khz - 0.0409 - %
@ 6 Ohm, 10W, 1Khz - 0.07 - %
Output Noise Level A-weighting, Input Connected to GND - 266.31 - µV
SNR 70W @ 6 Ohm, THD+N 1% - 95.38 - dB







23 Jul 2022

Hello. Is this board capable of powering 4 ohm speakers per channel? If yes, what power is available at 1% THD? Thanks

Hello, Suleima. Thank you for your interest in our products. The minimum load impedance of this amplifier board is 6Ohm. It's not suggested to use it to drive a 4Ohm load, which may produce high current and result in over-current protection. If you really need to drive 4Ohm speakers, you can control the input signal voltage to limit the output power. The maximum output power with 4Ohm speakers per channel in theory is around 66W @ 36V. Wish this could help you. Have a nice day~

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