Amplifier Product Line


The models SA2400-MKII and SA255 amplifiers are designed to work in concert with our full-range speakers and subwoofers to provide the optimum power and signal processing to bring laboratory-grade invisible sound to your project.


Using classic A+B amplifier architecture for proven performance, reliability and power output, these workhorse amps will ensure your Stealth speakers perform to their potential.


TYPETwo-Channel High-Current Amplifier with DSP optimizationMonaural Subwoofer Amplifier/Crossover
MONO POWER OUTPUT350 watts @8Ω < 0.05 THD
460 watts @4Ω < 0.05 THD
250 watts @8Ω < 0.05 THD
350 watts @4Ω < 0.05 THD
TOTAL HARMONIC DISTORTION< 0.05 @ 460 watt @4Ω / 1 kHz< 0.05 @ 1 watt @4Ω / 100 Hz
SIGNAL TO NOISE RATIO>105 dB / A weighting 20Hz-20kHz86 dB below rated output
LOW PASS FILTERPre-defined EQ curves for Stealth Acoustics LineaResponse® speakers50Hz – 150Hz / 18 dB per octave
HIGH PASS FILTERFixed high-pass filter @18Hz18Hz / 30 dB per octave (fixed)
8Ω nominal, 4Ω minimum8Ω nominal, 4Ω minimum
CURRENT DRAW1080 watts @115V / 8 Ω (100Hz sine wave – both channels driven)6.2A @ 350W/4 – 115VAC/60Hz
WIDTH19” (482 mm) with ears19” (482 mm) with ears
HEIGHT 3-1/2” (89 mm) without feet3-1/2” (89 mm) without feet
DEPTH15-3/4” (400 mm) without knobs13-5/8” (345 mm) without knobs
WEIGHT38 lbs. (17.2 kg)31.3 Lbs. (14.20 kg)