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Halo by Parasound 5 Channel Amplifier-A 52+

Model #: A 52+
137357
Parasound
At a Glance

Halo by Parasound 5 Channel Amplifier with DC Servo and relay protection circuits

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$2,995.00Save $NaN
$2,995.00

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Get to know this product.

  • 180 watts RMS x 5 @ 8 Ω
  • 255 watts RMS x 5 @ 4 Ω
  • 225 watts RMS x 2 @ 8 Ω
  • 350 watts RMS x 2 @ 4 Ω
  • Class A/AB circuitry designed by legendary John Curl
  • Direct coupled - no capacitors or inductors in audio path ensures the cleanest signal
  • Balanced XLR inputs with discrete circuits
  • Full power is rated all the way down to 5Hz for unrestricted low-end bass
  • Custom 1.5 kVA encapsulated toroid power transformer with independent secondary windings for each channel
  • Hand-matched JFETs for input stage
  • Hand-matched MOSFETs for driver stage
  • Beta-matched 15 amp, 60 MHz bipolar output transistors (3 pairs per channel)
  • 100,000 µF power supply filter capacitance
  • DC Servo and relay protection circuits
  • Auto turn on by audio signal or 12V trigger
  • Heavy-duty 24k gold-plated, 5-way speaker terminals
  • 3U chassis with updated cosmetics, rack mountable with HRA3 (sold separately)

Power Output - All 5 Channels Driven

  • 180 watts x 5, 8 Ω
  • 255 watts x 5, 4 Ω

Power Output - 2 Channels Driven

  • 225 watts x 2, 8 Ω
  • 350 watts x 2, 4 Ω

Power measurements parameters

  • (with 120VAC, 0.05% THD, RMS continuous power, full audio band): 20 Hz - 20 kHz

Current Capacity

  • 45 amperes peak, per channel

Dynamic Headroom

  • >1.5dB

Slew Rate

  • > 130 volts per microsecond

Frequency Response

  • 5 Hz - 100 kHz, +0/-3 dB
  • 20 Hz - 20 kHz, +0/-0.3 dB

Total Harmonic Distortion (THD)

  • < 0.05 % at full power
  • < 0.03 % at typical listening levels

IM Distortion

  • < 0.04 %

TIM

  • Unmeasurable

Interchannel Crosstalk

  • > 78 dB at 1 kHz
  • > 63 dB at 20 kHz

Input Impedance

  • Unbalanced: 47 kΩ
  • Balanced: 94 kΩ, 47 kΩ per leg

Input Sensitivity for 28.28 V Output into 8 Ω

  • Unbalanced: 1 V
  • Balanced: 1 V per leg
  • Total Gain: 29 dB

S/N Ratio

  • > 112 dB, input shorted, IHF A-weighted
  • > 102 dB, input shorted, unweighted

Damping Factor

  • > 1100 at 20 Hz

DC Trigger Requirements

  • +9 Vdc to +12 Vdc, 5 mA

Audio Trigger Requirements

  • 2 mV - 10 mV

XLR Pin Identification

  • 1 = Ground (Shield)
  • 2 = Positive
  • 3 = Negative (Return)

Power Requirement

  • Standby: 1 Watt
  • Idle: 125 Watts
  • Maximum: 1500 Watts

Dimensions

  • Depth without cables: 20”
  • Height without feet: 5.25”
Specifications

Specifications

Power On Consumption (watts):1500
Power Off Consumption (watts):1

Misc. Specs

Depth (in.)21.25
Height (in.)5.88
Channels5
Width (in.)17.25
Product Weight55
WarningProposition 65 Warning for California Residents