Parasound Halo A52+ Halo 5 Channel Power Amplifier B-Stock Full Warranty

Save 20%
$2,995.00
$2,395.00

SKU A52+B
Product Ships in 3 to 5 Days
PARASOUND B-STOCK
  • 100% WORKING CONDITION
  • THOROUGHLY INSPECTED
  • ORIGINAL PACKAGING + ALL ACCESSORIES
  • FULL MANUFACTURER'S WARRANTY
  • Parasound Halo A52+ Halo 5 Channel Power Amplifier B-Stock Full Warranty


  • 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)
  • Specs
    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)

    Dimensions
    Width: 17-1/4" (437 mm)
    Height without feet: 5-1/4" (133 mm)
    Height with feet: 5-7/8" (149 mm)
    Depth: 20" (508 mm)
    Depth with cables: 21-1/4" (540 mm)

    Net Weight
    55 lb. (25 kg)

    Shipping Weight
    69 lb. (31.3 kg)

    Power Requirement
    Standby: 1 Watt
    Idle: 125 Watts
    Maximum: 1500 Watts

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