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The Sure Electronics AA-AB32315 LRA5 is a robust dual-channel Class D amplifier unit delivering up to 2 x 300 W, designed for efficient high-power audio with S/PDIF input and protection features for demanding installations.
Sure Electronics AA-AB32315 LRA5 2 x 300 W Class D Audio Amplifier Unit with S/PDIF Input
The Sure Electronics AA-AB32315 LRA5 is a high-power dual-channel amplifier module for applications that require efficient output, low distortion and reliable long-term operation. Built around the TPA3255 chipset, it delivers up to 2 x 300 W and is suitable for long-range sound reinforcement setups where stable high-power performance is essential.
With a 32 VDC to 48 VDC supply range, the unit is designed for integration with suitable external power supplies. Protection features include reverse polarity protection, an undervoltage protection threshold at 30 VDC and an overvoltage protection threshold at 50 VDC. The POWER_EN and FAULT control pins support system-level integration and monitoring.
The LRA5 uses a digital S/PDIF input by default and supports 16-bit to 32-bit DAC resolution with sampling frequencies from 44.1 kHz to 192 kHz. Typical audio performance includes 31.4 dB gain, 108.4 dB SNR at 2 x 300 W, 0.003% THD+N at 2 x 1 W and a 20 Hz to 20 kHz frequency response within ±1.0 dB, making it a strong choice for demanding amplifiers and installation projects.
The enclosure measures 171.40 x 117.50 x 68.50 mm and weighs 1745 g, giving it a solid, installation-ready form factor. LP-20 connectors are included for speaker output, power input, audio input and control, while the supplied L brackets provide mechanical support for mounting the unit to a chassis, enclosure or panel. Its wide operating temperature range and suitability for waterproof and salt-fog-resistant environments make it well suited for harsh-condition audio systems driving connected speakers.
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Speakers
Amplifiers
DAC converters
DSP modules
Turntables
Streamers
Woofers
Tweeters
Exciters
Bass shakers
Plate amplifiers
Amplifier modules
Single board computers
Assembled crossovers
Printed Circuit Boards (PCB)
Capacitors
Resistors
Coils
Circuit Breakers
Crossover tools
Screw terminals
Acoustic measurements
Electric measurements
Sound level meters
DIY amplifier kits
DIY component packs
DIY speaker kit
DIY subwoofer kits
DIY bluetooth speaker
DIY electronics kits
Binding posts
Cabinet Hardware
Cables
Connectors
Speaker cabinets
Electromechanics
Power supplies
Speaker repair
Workshop & tools
Amplifier accessories
Stands & mounts
Gift voucher
Books
New products
