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Mid Power(30-300W per channel)

2 x 250Watt Class D Audio Amplifier Board - IRS2092[627]

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20A 100V 12000uF Fast Recovery Rectifier Capacitor Bank Board - M



1000VA Hand Made Toroidal Transformer 1kW Amp 110V 115V 220V 230V 240V Amplifier




This stereo mid-power audio amplifier board employs high performance IRS2092 IC and is capable of delivering 250W output power per channel into an 8Ohm load. Giving full play to Class D topology and the advantages of the IRS2092 IC, this audio amplifier board features high efficiency as 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, loudspeakers, car audio and demanding industrial applications such as Physical Therapy Machines, Underwater Acoustics. Dual power supply is required for this amplifier board ang the suggested power supply range is ±60V - ±80V.

High Quality Audio Performance

By means of dedicated PCB layout design, careful components selection and engineers’ attentive debugging, this mid-power audio amplifier board features high audio performance with THD+N performing well as 0.004% @ 8Ohm, 1W, 1kHz. Therefore, this module can provide pretty powerful, warm and clean sound.

Flexible Load Characteristics and Wide Load Range

This audio amplifier module features flexible load characteristics with optimization in the frequency response. It has been tested in the lab with inductive load like a coil, capacitive load and resistive loads to make sure its stability and performance. Due to its low output impedance, this audio amplifier board supports wide load range, which can work stably even with a 1Ohm load without impact by the loudspeakers load characteristics.

Disclaimer: Extra attention needs to be paid for any operation with purely inductive and capacitive loads. It is suggested to send an inquiry email to us to confirm system compatibility with us before you use it to drive such loads.

Wide Bandwidth form 10Hz-22kHz

IRS2092 series can handle with wide bandwidth from 10Hz to 22kHz with uncompromising frequency response and audio performance, not only meeting requirements of audio system but also satisfying special demands of some applications such as Physical Therapy Machines, Underwater Acoustics and so on. With ten years’ experience and expertise, Sure Electronics is committed to providing best possible solutions for audio hobbyist or industrial customers. For any non-audio applications, customers are suggested to send an inquiry e-mail to Sure Electronics for system compatibility confirmation.

Dual Power Supply

This IRS2092 audio amplifier board requires dual power supply, in which case, power supply dedicates its full output voltage to single rail, ensuring the output power of amplifier. Taking full account of the power solution and saving customers’ material cost, Sure Electronics provides matched power supply solution as using rectifier and transformer. With the input of Dual 115V, which could be paralleled as 110/115V or serialized as 230/240V input, the transformer can provide Dual 48V, each 1000VA, and dual 15V auxiliary output with 1.25A maximum load in each coil to the rectifier who can convert AC input voltage into separate positive DC and negative DC voltage outputs. This combination can provide maximum voltage as ±67V, meeting most requirements for Audio Applications.

PBTL Configurable

This audio amplifier module supports configuration as stereo mode or mono mode, which is simply achieved by settings of two toggle switches provided on the board, saving much engineering cost and valuable time. One product, two operation modes, which is highly cost-effective.

High Reliability and Long Service Time

A robust heatsink is installed on the board for sufficient heat dissipation to avoid damage caused by overheat. Full protection circuit, like over temperature protection, overcurrent protection, over/under voltage and DC offset protection, is equipped on this board for high reliability and long service time.


Please note that this audio amplifier is designed for audio applications. Please do not use it in non-audio applications. If you want amplifiers for non-audio applications, please contact with us. We will provide you with full set of audio solution with special optimization in specific requirements on frequency, protection or output voltage of different applications.

Package Includes

1pc AA-AB32291

Video for connection instruction: video link

Video for demonstration of frequency sweep, burning the electric stove and driving the coil to boil the water: video link

Video for demonstration of driving the air conditioner: video link

Video for actual test of 2500W output power: video link

  • StyleBoards
  • Number Of Channel(s)2
  • Output Power250
  • SizeOthers
  • ChipsetIRS2092
  • Heat DissipationHeat Sink
  • Supported Parallel Bridge Tied Load ModeNO
  • inputSingle ended Line-in,
  • Power Voltage60V-80V
  • Output Power
  • 250W@8ohm ±70V DC THD+N 10%
  • 180W@8ohm ±70V DC THD+N 1%
  • Active Indicator
  • 1Ohm Stable Design
  • PBTL/BTL Switchable
  • Wide Bandwidth from 10Hz to 22kHz
  • Over current Protection
  • Over temperature Protection
  • DC Offset Protection
  • Optimized Heatsink Design
  • 4-screw Easy Installation
  • Weight: 576g/ 1.27 lbs (±10%)
  • Size: 6.00 x 4.50 x 2.5 inches
ParameterConditionsMin.Typ. Max.Units
Power Supply-±60±70±80VDC
Idle PowerSD Floating-12.620W
Maximum Current 500W @8Ohm -8-A
Efficiency250W @8Ohm 87-92%
Minimum Load Impedance--2-Ω
Switching FrequencySD Floating-285/240-KHz
Under voltage protection--51-V
Over voltage protection--91-V
Over Temperature protection--100-
Input Sensitivity(RMS)@8Ω, 250W,1KHz-1.17-V
Input Impedance--100-
Output Power@8Ω THD+N 1%-180-W
@8Ω THD+N 10%-250-W
Bandwidth @ ±3dB@8Ω20-20K   Hz
THD@8Ω, 1W, 1KHz-0.004-%
@8Ω, 10W, 1KHz-0.016-%
Output Noise LevelA-weighting, Input Connected to GND       -355-µV
SNR180W @8Ω THD+N 1%-82-dB







04 Sep 2022

Hello, if the board is switched to bridged mode, does it have a balanced input? If not, how can a balanced input be realized? Thanks!

Hello, Robert. Thank you for your interest in our products. This board does not support balanced input. If you switch it to bridged mode, you can input audio from RCA1A jack. Wish this could help you. Have a nice day~


27 Aug 2022

Hallo, I have a question about mono use of the board. I have a pair of tower with 87 db sensitivity and load 4 ohm. Minimun load is about 2,6 ohm at 80 Hz. Can I use the board in mono mode? I would like build two separate monoblock. Now I own a single board 2x250 W IRS2092. Thank you

Hello, Andrea. Thank you for your interest in our products. This 2x250W IRS2092 amplifier board can be used as mono mode and the output power will be around 1x500W@4Ohm, ±70V. You can use it to drive your speaker that has a 2.6Ohm minimum load at 80Hz. But the output power will be lower due to current limit circuit. Wish this could help you. Have a nice day~


26 Jan 2022

Hello, I have several questions: - what would be RMS output power on 4 Ohm speakers using dual 63V DC power supply? (both speakers connected) - Is 4x 10000uF enough? - I have a miniDSP which has 0,9Vrms max output. What does this means, since input sensitivity of your module is 1,17V? wil I havelower output? If so, how much lower?

Hello, Sandi. Thank you for your interest in our products. 1. The RMS output power will be 250W per channel when driving 4Ohm speakers with dual 63V power supply. 2. 10000uF rectifier capacitor bank should be enough. 3. The output power would be lower as around 150W per channel if the input signal voltage is 0.9V. Wish this could help you. Have a nice day~


20 Jan 2021

Can you please post a wiring diagram for AA-AB32291 using this with a 72v. DC battery? or please send an email to andycaldwell@yahoo.com. Also, is 16 gauge wiring OK or should I use something bigger? Thank you!

Hello, Andrew. Thank you for your interest in our products. Please note AA-AB32291 needs dual power supply and the recommended range is ±60 - ±80V. The battery connection diagram is as follows. As for the wiring, the cable used for power supply should withstand 4A current and the ones used for speakers should withstand 8A if the speaker load is 4Ohm. Wish this could help you.

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