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PARASOUND HALO A31 Three Channel Power Amplifier
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PARASOUND HALO A31 Three Channel Power Amplifier PARASOUND HALO A31 Three Channel Power Amplifier PARASOUND HALO A31 Three Channel Power Amplifier PARASOUND HALO A31 Three Channel Power Amplifier PARASOUND HALO A31 Three Channel Power Amplifier PARASOUND HALO A31 Three Channel Power Amplifier PARASOUND HALO A31 Three Channel Power Amplifier

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PARASOUND HALO A31 Three Channel Power Amplifier

The Parasound Halo A 31 was designed in response to increasing demand for a three-channel power amplifier that holds nothing back in power or performance. The A 31 is identical in performance and sound to the award- winning Halo A 51.

As low as $7,345.00
SKU
paraa31

The Parasound Halo A 31 was designed in response to increasing demand for a three-channel power amplifier that holds nothing back in power or performance. The A 31 is identical in performance and sound to the award- winning Halo A 51.

  • 250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms
  • Adjustable gain for up to +6db over THX Reference level
  • Unbalanced RCA and balanced XLR inputs
  • Circuitry designed by legendary John Curl
  • High bias class A/AB operation
  • Direct coupled (no capacitors or inductors in signal path)
  • Complementary MOSFET driver stage and JFET input stage
  • 24 beta-matched 15 amp, 60 MHz bipolar output transistors
  • 1.5 kVA encapsulated toroid power transformer with independent
      secondary windings for each channel
  • 98,400 µF power supply filter capacitance
  • DC Servo and relay protection circuits
  • AC present, channel status, high temperature indicators
  • Heavy-duty 24k gold-plated 5-way speaker terminals
  • THX Ultra2 certified
  • Auto turn-on by 12v trigger or audio signal
  • 4u Chassis, carry handles

Continuous power output 

  • 250 watts RMS x 3, 20 Hz - 20 kHz, 8 Ω, all channels driven
  • 400 watts RMS x 3, 20 Hz - 20 kHz, 4 Ω, all channels driven

Current Capacity

  • 60 Amperes peak per channel

Power Bandwidth

  • 5 Hz - 100 kHz, +0/-3 dB at 1 watt

Total Harmonic Distortion

  • < 0.2 % at full power

IM distortion: balanced 16 V rms

  • < 0.04 %

Slew Rate

  • > 130 V/µsecond

Dynamic Headroom

  • > 1.5 dB

Interchannel Crosstalk

  • 78 dB at 1kHz

 

  • 63 dB at 20kHz

Input Sensitivity

  • 1 V for 28.28 V (THX Reference)

Input Impedance

  • 47 k Ω unbalanced; 94 k Ω balanced

S/N Ratio

  • 112 dB, Input Shorted, IHF A-weighted

Damping Factor

  • 1100 at 20Hz

Dimensions

  • 44cm width
  • 20cm height
  • 49cm depth

Net Weight

  • 30kg

Shipping Weight

  • 36kg