Differential Reference™ Two-Channel Power Amplifier

17 reviews

  • XPA-DR2
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  • XPA-DR2


Differential Reference™ Two-Channel Power Amplifier

17 reviews

This product is assembled to order in the USA and will be on its way to you within 1-2 business days.

The XPA-DR2 is a high-powered two-channel audiophile power amplifier that combines the exceptional accuracy and finesse of a true balanced differential design with the power you need to deliver musical crescendos and movie special effects with stunning realism and impact. Whatever your listening preferences, the XPA-DR2 will give you the combination of detail and power than only a fully differential amplifier can provide.

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  • The XPA-DR2 is a high-powered two-channel audiophile power amplifier that combines the exceptional accuracy and finesse of a true balanced differential design with the power you need to deliver musical crescendos and movie special effects with stunning realism and impact. Whatever your listening preferences, the XPA-DR2 will give you the combination of detail and power than only a fully differential amplifier can provide.

    The XPA-DR2 features two of our Differential Reference™ Amplifier Modules, and is the ideal choice to power a no-holds-barred stereo music system, or to power the critical front left and right channels of an absolutely awesome surround sound music or home theater system. The XPA-DR2 delivers 550 watts RMS into 8 Ohms, and 800 watts RMS into 4 Ohms, both channels driven, with less than 0.1% THD.

    The Power Supply: The Foundation Of A Great Amplifier

    In amplifier design, everything starts with the power supply. The XPA-DR2 features a custom-configured version of our high-current switch mode power supply (SMPS) - a lightweight, powerful, intelligent design capable of delivering over 3 kW of continuous power with absolute reliability and extremely high efficiency. Our cutting edge SMPS offers the dynamic attributes of a classic transformer-based design with none of the drawbacks. Like the best transformer-based power supplies, our SMPS delivers plenty of continuous power to enable our amplifier modules to live up to their full performance potential, and plenty of dynamic power to ensure that musical peaks will never be compressed or limited. However, compared to transformer-based designs, our SMPS is lighter and more efficient; it’s also fully regulated, which ensures optimum performance under a wider range of load conditions.  

    The Latest In A Long Line Of Great Amplifiers

    The Differential Reference Amplifier Modules we use in our XPA-DR amplifiers use the same basic circuit topology as our legendary XPR series amplifiers. A unique differential input stage, with a cross-linked current source, drives a balanced voltage amplification stage, and this advanced input circuitry delivers an incredibly accurate and pure audio signal to the complementary, fully discrete output stage. A pair of these modules work together in perfect synergy to power a single channel of one of our new fully balanced, fully differential, XPA-DR amplifiers. Together they deliver a holistic, natural, and powerful listening experience.  Low-level musical details and dialogue emerge from a deep black background; musical crescendos are delivered with both stunning impact and precision. The wide bandwidth, low distortion performance of the XPA-DR2 reveals every nuance of your high-resolution music sources, and it has plenty of power to drive even difficult loudspeakers with absolute authority and control.

    Class A/B Sound Quality Meets Optimized Class H Efficiency

    The Differential Reference™ Modules in the XPA-DR2 each use utilize a matched pair of amplifier modules, each of which features our fully analog Class A/B output stage, and our highly regarded Soft-Switch™ Class H power supply topology, which increases their efficiency significantly without compromising the audio performance you’d expect from an Emotiva amplifier. The output stage in each operates on a lower supply voltage at low power levels to minimize quiescent power consumption and standby power losses, instantly switching to a higher voltage rail when needed to ensure the signal passes cleanly and without clipping. This process happens on a continuous basis in real time, allowing greater overall efficiency, cooler operation, longer component life, reduced power consumption, and increased reliability.

    The Benefits Of A Fully Differential Balanced Power Amplifier

    Most experts agree that, if you want the absolute best sound quality and technical performance, you should use dedicated separate components. Because our power amplifiers are designed for a single purpose, we can concentrate on ensuring that they perform that one task very well, and avoid the compromises inherent in products that are expected to perform a variety of different functions.

    The Differential Reference Modules in the XPA-DR2 are each made up of a perfectly symmetrical balanced pair of high-performance amplifier modules. Each individual amplifier module already has vanishingly low distortion but, by connecting them as a balanced differential pair, a significant portion of the tiny amount of remaining nonlinearity is cancelled out. As a result, we are able to achieve even lower levels of distortion in the XPA-DR2, resulting in remarkably transparent sound, with unprecedented smoothness and clarity.

    When you put it all together, the XPA-DR2 is simply the finest stereo amplifier we can devise, and we’re sure you’ll be as impressed with its performance as we are.

    Designed and Assembled in the USA with Globally Sourced Components

    The XPA-DR2 is designed, assembled, and tested in the USA, where we use the finest materials and latest technologies to bring you world-class products. Each Emotiva amplifier is carefully designed with premium components to deliver a stunningly capable, reliable, and refined system.

    The Latest and Greatest

    A new approach to amplifier design.

    When we set out to make the new X Series line, we analyzed everything in every amplifier we’ve ever made, from front to back, inside, and out. In doing so, we discovered several areas where our years of experience, and advances in audio technology, indicated that we could make significant improvements in our amplifier designs. After carefully weighing all the pros and cons, we kept the best features of our original designs, added a new set of optimizations and improvements, and the result became the foundation of our new line of audiophile amplifiers. The new XPA-DR amplifiers are the fully differential members of our new XPA amplifier family, and carry our philosophy of continuous product improvement to its ultimate conclusion.

    Modular Construction

    Each XPA-DR Differential Reference™ Power Amplifier is comprised of a heavy-duty chassis, which houses our massively overdesigned, fully regulated, 3 kW switch mode power supply, and up to three Differential Reference™ Amplifier Modules. The front panel display and protection system are designed to work with the maximum number of channels, and so need not be updated when the XPA-DR is expanded; on the rear panel, slots not occupied by amplifier modules will be covered with protective cover panels. (Because the XPA-DR2 is configured with two Differential Reference Modules, one additional module can be added later if desired.)

    Note: To ensure that amplifier channels are always installed properly, and function to our specifications, amplifier modules must be installed by Emotiva, or by your local authorized Emotiva service representative.

  • 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.

    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-DR2 to control and be controlled by other trigger-enabled equipment.

    • World compliant AC line voltage operation enables the XPA-DR2 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-DR2 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-DR2 amplifier for years to come.

  • 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-DR2 features two Differential Reference™ Amplifier Modules.  

    Audio Specifications (Two Differential Reference Amplifier Modules):

    • Power Output (both channels driven):
      550 watts RMS, per channel, into 8 Ohms, at <0.1% THD.
      800 watts RMS, per channel, 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):
      > 120 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): 2.1 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, per channel, 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-DR2 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:
      42.5 lbs (unboxed).
      47.5 lbs (boxed).


    Download Product Manual


With globally sourced components, we are able to achieve the highest quality control and performance with our in house design, assembly, and testing.


No-hassle return policy. We’ll issue you an RMA number with the return instructions.


Every Emotiva product has been designed and engineered to work seamlessly together.

Customer Reviews
4.9 Based on 17 Reviews
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Filter Reviews:
John S.

Just what my speakers needed. Took my system to the next level just as I hoped it would. Deep tight bass and clean highs. I don't think lack of power will be a concern of mine again. This amp has plenty of it!

Daniel F.
Will Make Your Speakers Sing

I kept going back and forth on whether to buy the DR2 or not. I first heard it at a local shop, and I was impressed; however, I was also enamored by the idea of a McIntosh poweramp...the MC152 to be precise. I went back and forth for close to a year, that was until I got to see more emotiva stuff and learn more about them at Axpona 2019. I'm glad I made the jump! This amp has made my speakers (Martin Logan Motion 60s) sound like completely different speakers, which had previously been driven by my Marantz SR6011. My Marantz avr now functions as a preamp for my setup. Eventually I plan on upgrading this to a full separate setup as well, but it works just fine for now. Seriously though, my speakers have so much more punch and dynamic range now. It even sounds like there is a subwoofer firing (I had to check and make sure that my subwoofer was not, in fact, firing at the time (it wasn't, as my setup was in 2.0 mode at the time).

John M.
A have to have amp

Great amp for the money. Very well balanced deep bass paired to their preamp makes my old rebuilt Bic 940 with a Grado gold and a new pair of Klipsch RF-7 II sing. Sweet spot on couch in living room and a little tweaking on anti skat using XLR cables is holographic most of time. The amp also enjoys to be tube buffered as well. At about -18.0 volume on the XSP-1 preamp I'm setting off the front door Schlag deadbolt alarm and I can tell you playing Van Hallen Intruder has been outlawed by wife. When Eddie is picking then dragging his pic on strings the amp never vaulters, I believe there's more power left to push but my speakers probably can't take it and it's ridiculously loud like at a concert.

Charles K.

As usual, Emotiva's products are high quality. My best description of this amp, is effortless reproduction of whatever you send to it. I have always been satisfied with everything I have bought from them. I recommend them to everyone

Mark M.

Packaging was great, the unit is very well built. Sound quality is top notch. Read lots of reviews about emotiva gear, some good some bad. My opinion is that it is well worth the price, and sounds as good as expected.

*All reviews have been incentivized