Customer Support



    Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board

    € 31,78€ 38,45 8 In stock: delivery time 1-4 business days
    Bulk discount Enjoy these awesome discount deals
    • -5% Order 4 for only €36,53 per piece
    • 24h express shipping available
    • Low international shipping rates
    • Same day shipping*
    • In-house technical support

    Product description

    The Class D amplifier topology makes this 2 x 50W amplifier board efficient and consume less space than traditional solid state amplifiers.



    • 2 x 50W Class D amplifier
    • Small footprint for space limited applications
    • Built-in cooling fan, pop noise suppression, and over-temp protection circuit
    • 14 to 27 VDC power supply required


    Product details

    Sure Electronics AA-AB32174 2x50W TDA7492 Class-D Amplifier Board

    Tip:  Take a look at the table in this blogpost to see which power supply to choose for this product.


    This amplifier board features a state-of-the-art, dual channel Class-D TDA7492 IC, which delivers up to 50 watts per channel. The small 3.6" wide by 4.8" long footprint allows this amplifier board to be used in many applications were size constraints limit the use of conventional amplifiers. Just add a 14 to 27 VDC power supply, signal source, and speakers!


    A low noise cooling fan is mounted atop the robust heatsink to maximize heat dissipation. Thermal protection is also included to extend the longevity of the amplifier board. Four fixed gain settings are available to allow for volume control at the source, and stereo RCA line-level inputs are pre-attached. Mounting holes are provided as is a 2.5 mm x 5.5 mm power jack for quick connection. Screw-down phoenix-type terminals are included for quick speaker wire connection.


    • Class D amplifier topology featuring TDA7492 amplifier IC
    • Heatsink with attached fan
    • Pre-drilled mounting holes
    • Over-temperature protection circuit
    • Click and pop noise suppression
    • Phoenix-type speaker terminals
    • Line-level RCA input




    Typical Performance Graphs:
    Frequency response:


    Noise Floor:


    THD+N VS Frequency:


    Thermal Image:

    All parameters were tested with Rohde & Schwarz UPV audio analyzer and AP AUX0025 filter with AES17 filter enabled.


    Article number
    Rated power output
    2 x 50 watts at 6 ohms
    Minimum load
    4 ohms
    88 - 93 %
    Signal-to-noise ratio (SNR)
    96 dB

    0.041 % THD at 1 kHz, 6 ohms, 1 watt
    0.051 % THD at 1 kHz, 6 ohms, 10 watts

    Frequency response
    20 - 20,000 Hz
    22, 28, 31, 34 dB
    Input sensitivity
    1.7 V
    Input impedance
    22k ohms
    Amplifier Classification
    Class D
    Circuit Topology
    STMicroelectronics TDA7492
    Speaker output channels
    Input connection type

    PCB solder connection

    Speaker output connection type

    Screw terminal
    PCB solder connection

    DSP function
    EQ Adjustment
    Power Requirements
    10 - 27 VDC
    Power inlet connector

    2.5 mm DC jack
    Screw terminal

    Current limit
    4.63 A
    Under/over voltage protection
    Dimensions (L x W x H)
    122 x 91 x 36 mm
    Mounting hole spacing
    112 x 81 mm
    Mounting hole diameter
    3.5 mm


    0 from 5Based on 0 reviews
    Review this product

    There are no reviews written yet about this product..

    Related products

    Complete your purchase

    AA-AB32174 2x50W TDA7492 Class-D Amplifier Board
    € 31,78
    € 38,45
    AA-AB32174 2x50W TDA7492 Class-D Amplifier Board
    8 In stock: delivery time 1-4 business days
    Add to cart
    Compare 0

    Add another product (max. 5)

    Start comparison

    By using our website, you agree to the usage of cookies to help us make this website better. Hide this messageMore on cookies »