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Alpine X-Power 4-Channel Digital Amplifier - MRX-F65

Abt Model: MRXF65 | UPC Code: 793276011619
 Discontinued Product This item is no longer available from our website.
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650W Max Power Output/ 4/3/2 Channel Design/ Thermal Management Control/ MOSFET Power Supply/ S.T.A.R. Circuitry/ Top Mounted Blue LED Power Indicator/ Variable Lowpass And Highpass Filter/ Built-In Bass EQ/ 6-Layer Glass Epoxy PC Board/ Continuously Adjustable Gain Control/ Black Finish
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Product Details

Alpine X-Power 4-Channel Digital Amplifier, Model MRXF65


  • Amplifier Type: Class-D (Digital)
  • Channel Design: 4/3/2 Channel
  • Thermal Control: Thermal Management Control
  • Power Supply: MOSFET
  • Power Supply Design: DC-DC PWM Power Supply
  • Board Circuitry: S.T.A.R. Circuitry
  • Current Protection: Over-Current, Over-Voltage and Thermal Protection
  • Power Indicator: Top Mounted Blue LED Power Indicator
  • 4-Channel Speaker-Level Inputs
  • Crossover: Variable Lowpass & Highpass Filter
  • Built-in Bass EQ
  • Final Outputs: Direct FET
  • Board Design: 6-layer Glass Epoxy PC Board
  • Gain Control: Continuously Adjustable Gain Control


Max Power Output Ratings

  • Total Max Power: 650W

RMS Power Ratings

  • Per Channel into 4ohms, 14.4V (=1%THD+N): 110W
  • Per Channel into 2ohms, 14.4V (=1%THD+N): 160W
  • Bridged into 4ohms, 14.4V (=1%THD+N): 320W x 2

Sound Tuning

  • Crossover Frequency (LPF/HPF Selectable): Variable, 50 - 400Hz (-12dB/oct.)
  • EQ (Equalizer): Bass EQ (fc=50Hz) 0 to +12dB for CH-3/4


  • Power Requirements: 14.4V DC (11 - 16V)
  • Input Sensitivity (RCA Input): 0.2 - 4.0V
  • Input Sensitivity (Speaker Level Input): 0.5 - 10V
  • Input Impedance: >10k ohms
  • Frequency Response (+0, -3dB: 1W into 4 ohms): 5Hz - 45kHz
  • Frequency Response (+0, -1dB: 1W into 4 ohms): 7Hz - 30kHz
  • THD+N (10W into 4 ohms): <0.02%
  • THD+N (Rated Power into 4 ohms): <0.07%
  • Damping Factor: >500
  • Signal to Noise (Rated Power into 4 ohms): 106dB

Approximate Weight:

  • Shipping: 5 lbs
More reasons to buy the Alpine MRX-F65 from Abt Electronics
  • Abt.com is an authorized dealer (Learn More).
  • The Alpine MRX-F65 is Brand New.
  • The Alpine MRX-F65 Ships in a Factory Sealed Box.
  • Abt ships this product for free!


by PowerReviews
Alpine X-Power 4-Channel Digital Amplifier

(based on 1 review)

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Reviewed by 1 customer

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Lotta bang


from Chicago,il

Verified Buyer


  • Good Power Output
  • Great Sound Quality


    Best Uses

      Comments about Alpine X-Power 4-Channel Digital Amplifier:

      Love Alpine,great amp,great power, great value!!!!

      • Was this a gift?:
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      Comment on this review

      Alpine X-Power 4-Channel Digital Amplifier

      Alpine X-Power 4-Channel Digital Amplifier


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