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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.
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.
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
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.
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.
The XPA-DR1 features one Differential Reference™ Amplifier Module.
Audio Specifications (One Differential Reference Amplifier Module):
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.
33 kOhms (balanced).
23.5 kOhms (unbalanced).
Input And Output Connections
Unbalanced (RCA); balanced (XLR); one each, user selectable.
Speaker Output Connections: Audiophile grade, gold plated, 5-way binding posts.
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.
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.
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).
35.5 lbs (unboxed).
40.5 lbs (boxed).