The SoundTube SA502 is a compact, high-efficiency Class D stereo amplifier delivering 50 watts per channel for clear and reliable audio performance. Engineered for commercial environments, the SA502 offers low heat output, energy-efficient operation, and flexible connectivity to fit a wide variety of distributed audio applications.
Designed for quick installation in tight spaces, the SA502 includes versatile mounting hardware for behind-display, wall, rack, or ceiling placement. Balanced and unbalanced inputs ensure compatibility with DSPs, mixers, digital signage sources, and paging systems. Built-in protection circuitry, auto-standby functionality, and a 12V trigger support safe and efficient operation in any professional setup.
Perfect for background music, paging, and small-zone audio reinforcement, the SA502 combines clean output with a lightweight, dependable design suitable for retail, hospitality, education, and corporate installations.
SoundTube SA502 Key Features
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50 watts per channel (stereo @ 4/8 ohms)
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High-efficiency Class D amplifier topology
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Compact, lightweight housing ideal for tight installs
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Balanced and unbalanced inputs for flexible audio integration
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Auto-standby and 12V trigger input
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Thermal, overload, and short-circuit protection
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Includes mounting hardware for multiple installation styles
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Reliable solution for commercial background music and paging systems
Recommended Applications
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Classrooms and meeting rooms
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Retail stores and restaurants
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Hotels, hospitality spaces
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Digital signage and kiosks
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Museums and public buildings
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Residential distributed audio zones
SoundTube SA502 Specifications
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Frequency Response(-3 dB)
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20 Hz – 20 kHz
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Max Gain
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34 dB (8 ohm)
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Power per channel @ < 10 % THD
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55 watts (8 ohm) 2 x 70 watts (4 ohms)
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Power per channel @ < 1 % THD
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50 watts (8 ohm) 65 watt (4 ohm)
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Bridged mono power @ < 1 % THD
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90 watts (4 ohm)
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Power Supply/Requirements
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32 v DC, 3.75A
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Signal to Noise
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> 83 dB (50 watts)
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Input Impedance
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47 kohm line level, 600 ohm balanced
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Input Sensitivity
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0.5 v line input
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High-pass filter (F3)
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120 Hz (12 dB per octave) selectable
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Height
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30.5 mm (1.2 in.)
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Width
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99.1 mm (3.9 in.)
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Length
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101.6 mm (4.0 in.)
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Weight – amp only
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0.26 kg (0.56 lbs)
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