- 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):
- 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 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).
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.