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. Our commitment to build quality, superior design and ultimate performance is reflected in every facet of the XPA-1.

The XPA-1: Effortless.

Some exclusions apply. Sale price may not be combined with another promotion.

Features

• 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.
• Advanced microprocessor operating system.
• 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.

Reference

Reviews
HomeTheaterHifi.com
AudioReview.com (January, 2011)

Manuals
X-Series Amplifier Manual (PDF)

Test Data
Audio Precision Spec Test Data - 8 ohms (PDF)
Audio Precision Spec Test Data - 4 ohms (PDF)

Photos

Specifications

• Number of channels: 1
• Topology: fully balanced, fully discrete, quad differential, ultra high current, short signal path Class A/B
• Amplifier gain: 32 dB
• Signal to Noise Ratio: 1 watt: > 100 dB
• Full power: > 117 dB
• Power band response: 20 Hz to 20 kHz with less than .05 dB deviation at rated power
• Transformer size: 1,200VA
• Broadband frequency response: (-3 dB): 5Hz to 150kHz
• Power output (all channels driven):
  1,000 watts RMS @ 4 ohm (0.1% THD)
  500 watts RMS @ 8 ohm (0.1% THD)
• Input impedance:
  
• unbalanced: 20 kohms
  
• balanced: 18 kohm
• Secondary capacitance: 120,000uF
  
• Output devices: 24
• Size:
  
• unboxed: 17” wide x 7 3/4” high x 19” deep
  
• boxed: 23 1/2" wide x 12 1/4" high x 24 1/2" deep
• Weight: 75.7 lbs (82.5 lbs boxed)