Parasound Halo A52+ 5 Channel Amplifier

$4,900.00

Features & Specifications

• 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
• 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