Model: XPA-1
Year: 2009
Price: $999
Class: A/B
Channels: 1
Power 8 Ohm All Channels Driven: 500W
Power 4 Ohm All Channels Driven: 1000W
Power Bandwidth: +/-0.05dB
Frequency Response: 5Hz-150kHz(-3dB)
THD: <.007%
SN Ratio 1W: >100dB
SN Ratio Full: >117dB
Damping: NA
Crosstalk: NA
TransformerVA: 1,200
Capacitance: 120,000
Input Sensitivity: 1.8
Input Impedance Unbal/Bal: 20/18
Gain: 32dB
Adjustable Gain: No
Power Requirements: 15A
Connections: XLR/RCA
Trigger: 2-12V/DC
LED Meters: Yes
2 Ohm Capable: NA
Output Devices: 24
Fans: No
Weight: 75.7
Width: 17
Height: 7.75
Depth: 19
Rack Size: 4U
Topology: Fully balanced, fully discrete, quad differential

You know that sweet spot all amplifiers have? That magical level where things are rich, full, but still open and relaxed?
With the XPA-1, you’ll find that sweet spot at practically every volume level—from the softest pianissimo to the full-throated roar of an orchestral crescendo. And the sound? Big, expansive, powerful, and yet very, very refined, with all the detail you’d expect from a flagship amplifier.
The XPA-1 represents the ultimate expression of our approach to design and construction in our X Series power amplifiers.

  • Fully balanced, Differential Reference™ design.
  • Automatic 120/230 AC voltage detection and switching.
  • Multi segment bar graph output level meters with clip detect.
  • High resolution, multi segment output level metering with clip detect.
  • Advanced microprocessor operating system.
  • Discrete front end, no integrated circuits.
  • Fully balanced, quad differential input stage, with cross coupled active current sources.
  • Darlington VAS stage with optimized C dominant pole.
  • External trigger turn on.
  • Fully protected from all fault conditions.
  • External trigger input/output (3-12 Volts DC - tip positive).
  • Soft touch power switch.
  • 4RU chassis w/ 15mm solid milled aluminum faceplate.
  • IEC power inlet.
  • Laser etched serial number badge on the front plate