Emotiva XPA-DR1 650W Monoblock Power Amplifier


Differential Reference Monoblock Power Amplifier

The XPA-DR1 is a true monoblock power amplifier, and features a single Differential Reference Amplifier Module, in a true monoblock configuration, powered by its own dedicated 3 kW switch mode power supply. The XPA-DR1 provides massive power, superb dynamics, incredible resolution, and absolute control. If you’re looking for the very best sound quality, with virtually endless reserves of power against a jet black noise floor, this is the amplifier for you.

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XPA-DR1 Features


  • Circuit Topology

    • A fully modular, fully differential, fully balanced audio power amplifier with a high-efficiency switch mode power supply (SMPS), independent, fully discrete, dual differential, high current, short signal path Class A/B amplifier modules, Optimized Class H™ power supply topology, and microprocessor-controlled fault protection.

    Audio Specifications

    The XPA-DR1 features one Differential Reference™ Amplifier Module.

    Audio Specifications (One Differential Reference Amplifier Module):

    • Power Output:
      650 watts RMS into 8 Ohms at <0.1% THD.
      1000 watts RMS into 4 Ohms at <0.1% THD.
    • Power Bandwidth (at rated power; 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.1 dB).
    • Broad Band Frequency Response: 20 Hz to 50 kHz +0/-2 dB.
    • THD + noise: < 0.008%; at 100 watts RMS; 1 kHz; 8 Ohms.
    • Signal to Noise Ratio (8 Ohm load):
      > 122 dB; ref FTC rated power; unbalanced input (A-weighted).
      > 96 dB; ref 1 watt; unbalanced input (A-weighted).
    • Minimum Recommended Load Impedance (per channel): 4 Ohms
      (which equals one 4 Ohm load or two paralleled 8 Ohm loads).
    • Damping Factor (8 Ohm load): > 500.
    • Input Sensitivity (for rated power; 8 Ohm load): 2.4 V.
    • Gain: 29 dB.
    • Input Impedance:
      33 kOhms (balanced).
      23.5 kOhms (unbalanced).

    Input And Output Connections

    • Input Connections:
      Unbalanced (RCA); balanced (XLR); one each, user selectable.
    • Speaker Output Connections: Audiophile grade, gold plated, 5-way binding posts.
    • Trigger:
      Trigger Input: 5 – 12 V (AC or DC); <10 mA input current required.
      Trigger Output: 12 VDC; can drive any load up to 120 mA.

    Power Requirements

    • Between 100 VAC and 250 VAC @ 50 / 60 Hz (automatically detected).

    Front Panel Controls and Indicators

    • Standby: push button (halo ring changes color to indicate Standby or On).
    • Status LEDs: one per channel; blue.
      Status LEDs change to red to indicate a fault condition.

    Rear Panel Controls

    • AC Power switch: rocker switch (switches AC main power).
    • Status LEDs switch: disables front panel Status LEDs and dims Standby button halo.
    • Input selector switches (one per channel):
      metal toggle switches; select between balanced and unbalanced inputs.
    • Circuit Breaker: press button to reset circuit breaker.


    • The XPA-DR1 is protected against excessive operating temperature, shorted speaker connections, ground faults, and other common fault conditions.


    • Dimensions:
      17” wide x 8” high x 19” deep (unboxed; including feet).
      17” wide x 7” high x 19” deep (unboxed; without feet).
      24-1/2” wide x 12” high x 24-3/4” deep (boxed).
    • Weight:
      35.5 lbs (unboxed).
      40.5 lbs (boxed).



  • Differential Reference™ Performance And Sound Quality

    • High-powered, fully-differential, low distortion amplifier design delivers massive dynamics with smooth precision, offering superbly detailed sound and incredibly natural imaging.
    • A true monoblock, where each chassis houses the power supply and amplifier circuitry for a single channel, for the absolute ultimate in performance and channel separation.

    Sound Quality First

    • Designed first and foremost to sound superb in all types of audio systems with all types of music.
    • Low noise, low distortion, wideband amplifier design with traditional Class A/B output stage ensures smooth, detailed sound, without a trace of strain or harshness.
    • Totally stable with real world speakers in real systems; not just on a test bench.

    Modern Efficient Circuit Design

    • Optimized Soft-Switch Class H™ power supply topology delivers improved efficiency without compromising audio performance.
    • Switched Mode Power Supply (SMPS) offers all of the performance of a traditional linear power supply, with improved efficiency and reliability, and reduced overall weight.

    Quality Construction

    • Top quality parts and construction throughout for years of reliable trouble-free  service.
    • Heavy steel 4RU chassis with milled aluminum faceplate offers strength and rugged good looks.
    • Solid machined gold-plated RCA input connectors provide a reliable connection with a wide variety of audio interconnects.
    • Fully modular construction allows you to purchase as many channels as you need today, and then add more channels later when and if you need them.
    • Designed, assembled, and tested in the U.S.A. at our plant here in
      Franklin, Tennessee

    Flexible Signal Connections and Power Options

    • Gold plated five-way speaker binding posts with clear shields allow you to use a wide range of speaker cables with bare wires, lugs, or banana plugs.
    • Choice of balanced or unbalanced input for each channel, independently controlled by reliable metal toggle switches.
    • Remote trigger input and output allow the XPA-DR1 to control and be controlled by other trigger-enabled equipment.
    • World compliant AC line voltage operation enables the XPA-DR1 to operate on any line voltage between 100 VAC and 250 VAC 50/60Hz.
    • Standard IEC power inlet fits all standard IEC power cables and most custom audiophile power cables.


    • Audiophile-grade fault protection is entirely transparent under normal listening conditions, yet protects the amp and your other equipment from virtually all common faults.
    • The XPA-DR1 is protected from AC line faults by a rugged resettable rear panel push-button circuit breaker.
    • Full five-year warranty ensures that you’ll be able to enjoy your XPA-DR1 amplifier for years to come.