Alesis RA500 Reference Amplifier

Priced: $213.69
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Alesis RA500 Reference Amplifier -

Power your studio monitors, headphones, or home theater with Alesis RA500 Reference Amplifiers. Offered in three power categories, the RA series is quiet, efficient and cool-operating for the demanding studio environment. The good looks and attractive prices simply add to the value of RA150, RA300 and RA500 amplifiers.
RA amplifiers provide more power and better performance at a lower cost-per-watt with crisp, clean signal. Designed for studio use, each RA amplifier incorporates advanced convection cooling for outstanding heat dissipation. The result is long, stable operation that is unaffected by heat-related complications, devoid of the noise of fan-cooling.
Whether you use RA series amplifiers to power studio monitors, headphones, or home theater speakers, you'll enjoy their reliable, consistent performance.


  • Advanced convection cooling for outstanding heat dissipation
  • Front-panel volume controls
  • Quiet, cool, efficient class AB power amplifier
  • Switchable voltage (120/230 VAC)
  • Crisp, clean signal
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Crosstalk:85dB, 1kHz
Damping Factor:200
Dimensions:18.9 x 5.63 x 10.71" / 480.1 x 143.0 x 272.0mm
Frequency Response:10Hz - 70kHz +0, -3dB
Input Sensitivity:+4dBu (1.23 V) for rated output with input control at maximum
Input impedance:20kOhms, balanced, 10 kOhms unbalanced
Inputs:XLR3F, 1/4" TRS, RCA
Maximum input level:+26 dBu
Rack Units:3RU Height
Rated output, per channel:4 Ohms at 1kHz, .02% THD+N 250 Watts RMS per channel 8 Ohms at 1kHz, .05% THD+N 150 Watts RMS per channel 8 Ohms, bridged mono mode 500 Watts RMS
Signal to Noise Ratio:105dB, 22Hz-22kHz bandwidth referenced to rated output
Slew Rate:60 V/us (two channel), 120 V/us (bridged mono)
Weight:28.5lbs / 13.0Kg

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