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Mid Power(30-300W per channel)

2 x 100Watt Class D Audio Amplifier Board - TDA7498[107]

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Mean Well LRS-350-36 36V 350W AC/DC Switching Power Supply




This Class D stereo mid-power audio amplifier board employs TDA7498 amplifier IC as the driver and delivers 100W output power per channel into a 6Ohm load. It features high efficiency up to 92% and high sound quality with low distortion and low noise level. Easy installation, high reliability and mid power output makes this audio amplifier board suitable for home audio, DIY audio, desktop amplifier, car audio, home theater and demanding industrial applications. A DC15-36V power supply is required.

High Quality Audio Performance

By means of the dedicated PCB layout design and engineers’ attentive debugging, this mid-power audio amplifier board features high audio performance, whose SNR reaches 94.96dB and THD+N performs well as 0.0507% @ 4Ohm, 1W, 1kHz.

High Reliability and Long Service Time

An optimal heatsink along with a low noise cooling fan is mounted atop the amplifier board to maximum the heat dissipation, which improves its stability. Mute and Standby functions are offered with this amplifier module for easy control. 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. All the necessary terminals for power supply, audio input and audio output are pre-mounted on the board. Therefore, you only need to plug in the cables and enjoy music without any need of soldering. If you want all the terminals to be mounted for your applications, please contact us. MOQ would be required.

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 two switches on the board, no need of complex operations.

Package Includes

1pc AA-AB32189

  • StyleBoards
  • Number Of Channel(s)2
  • Output Power100
  • Size4.8 x 3.6 inches (121.92mm x 91.44mm)
  • ChipsetTDA749x
  • Heat DissipationHeat Sink & FAN
  • Supported Parallel Bridge Tied Load ModeNO
  • inputSingle ended Line-in,
  • Power Voltage15V-36V
  • Output Power
  • 100W@6Ohm 36V DC THD+N 10%
  • 99W@6Ohm 36V DC THD+N 1%
  • Power Indicator
  • Optimized Heatsink Design
  • Low Noise Cooling Fan
  • Over current Protection
  • Over temperature Protection
  • Gain Adjustable
  • Weight: 427g/ 0.94 lbs (±10%)
  • Size: 4.80 x 3.60 x 1.53 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 - 15 36 - VDC
Idle Power SD Floating, FAN ON - 6 10 W
SD Floating, FAN OFF - 3.9 8 W
Standby Power SD Connected to GND,FAN OFF - 1.8 5 W
Maximum Current 200W @6Ohm - 6.17 - A
Efficiency 100W @6Ohm 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 K1 ON, K2 ON - 25.6 - dB
K1 ON, K2 OFF - 31.6 - dB
K1 OFF, K2 ON - 35.6 - dB
K1 OFF, K2 OFF - 37.6 - dB
Input Sensitivity(RMS) @6Ω, 100W,1KHz - 1.387 - V
Input Impedance - - 33 -
Output Power @6Ω THD+N 1% - 99 - W
@6Ω THD+N 10% - 100 - W
Bandwidth @ ±3dB @6Ω 20 - 20K    Hz
THD @6Ω, 1W, 1KHz - 0.0507 - %
@6Ω, 10W, 1KHz - 0.092 - %
Output Noise Level A-weighting, Input Connected to GND       - 266.58 - µV
SNR 99W @6Ω THD+N 1% - 94.96 - dB






Oliver.John von Zydowitz

25 Aug 2021

Is the fan constantly on, or is it running only if the chip/heatsink reaches a minimum temperature? What is the fan speed in rpm?

Hello, Oliver.John. The fan will be constantly on for heat dissipation. The speed is 3200 R.P.M. Wish this could help you. Have a nice day~


20 Jan 2021

Can I use this Amp for 4 Ohms Speakers?

Hi, Robin. The minimum load impedance of this audio amplifier board is 6Ohm. It is suggested to drive 6Ohm speakers. If you use it to drive 4Ohm speakers, the output power would be around 66W due to the current limit. Wish this could help you.


04 Jan 2021

Is this board good to power 8 ohm 100watt speakers?

Hi, cosmin. Thank you for your interest in our products. This audio amplifier board can be used to drive 8Ohm 100Watt speakers. The output power is approximately 81W @ 36V when driving 8Ohm speakers. Wish this could help you.

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