Parasound - HALO A52+ - Power Amplifier

A killer addition to your AVR - Especially for Atmos!

Features

• 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)

Specifications

• 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)
• Power Requirement: Standby: 1 Watt, Idle: 125 Watts, Maximum: 1500 Watts