Alesis RA150 Reference Amplifier

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This product has now been discontinued
Special Offers Added:

SKU: DJK11051

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Product Description

Power your studio monitors, headphones, or home theater with Alesis 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.



Technical Specs

  • Quiet, cool, efficient class AB power amplifier
  • More power and better performance at a lower cost-per-watt than competitive amplifiers
  • Crisp, clean signal
  • Advanced convection cooling for outstanding heat dissipation
  • Inputs: XLR3F, 1/4" TRS, RCA
  • Switchable voltage (120/230 VAC)
  • Front-panel volume controls
  • Rated output:4 ohms: 75 watts RMS per channel ,8 ohms: 45 watts RMS per channel
    8 ohms: 150 watts RMS, bridged mode
    Signal to Noise Ratio: >105dB Frequency Response: 10Hz - 70kHz +0, -3dB
    Distortion: < 0.02% @ 4ohms, 20Hz - 20kHz Input Sensitivity: +4dB for rated output
    Crosstalk: -85dB, 1kHz Output offset: +/- 50 mV, Servo controlled


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    Do you own the Alesis RA150 Reference Amplifier? Why not write a review based on your experience with it.
    26 August, 2014
    Alesis RA 150 Ref Amp
    I bought this to replace an old Yamaha amp that had failed. I have other Alesis products and know how good they are. Good sound clarity, powerful enough for my home studio, simple to set up. were excellent. amp arrived the next day. Will use them again no problem.
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    Alesis RA150 Reference Amplifier

    Delivery And Stock Information

    Free next working day delivery on orders over £100 placed before 3:30pm Monday to Friday.

    Orders placed at the weekend or after 3.30pm on Friday will be delivered on the following Tuesday (excluding Bank Holidays).

    Larger items / orders e.g large bass speakers or multiple speakers may have to be shipped via a pallet service which may take 1-2 days.

    Please check the estimated delivery date on the product, some items can take 2-7 days to be delivered. 

    Free next day delivery applies only to the UK mainland for orders over £100. Other locations will be charged as follows

      • Highlands and Islands 2-3 Days* + £25
      • Northern Ireland 2-3 Days* +£10
      • Deliveries will be made subject to the terms and conditions of the courier company. will not be held responsible for late deliveries.

    In the event that the items ordered are unavailable for next day delivery, you will be contacted by to arrange a suitable delivery date.

    "In stock" means that the product displayed is either in stock with ourselves or our suppliers and is available for delivery. Stock levels are subject to change without prior notice.


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