Parasound Halo A51 Five Channel Amplifier
********* The A51 is now only available in black. *********
With music, the A51 radiates sweetness and light. With action films, it rains thunder and lightning.
FEATURES:
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Circuitry designed by legendary John Curl
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THX Ultra2 certified
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High bias Class A/AB operation
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Balanced inputs with discrete circuits and XLR connectors
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Direct Coupled - no capacitors or inductors in signal path
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Complementary MOSFET driver stage and JFET input stage
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40 beta-matched 15 amp, 60 MHz bipolar output transistors
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2.2 kVA encapsulated toroid power transformer with independent secondary windings for each channel
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164,000 μF power supply filter capacitance
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DC Servo and relay protection circuits
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AC present, channel status, high temperature indicators
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Heavy-duty 24k gold-plated 5-way speaker terminals
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Gold-plated RCA input jacks; ground lift switch
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Auto turn-on by 12v trigger or audio signal
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4u Chassis, carry handles, rack mounting adapter included
SPECIFICATIONS:
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Continuous power output:250 watts RMS x 5, 20 Hz - 20 kHz, 8 Ω, all channels driven400 watts RMS x 5, 20 Hz - 20 kHz, 4 Ω, all channels driven
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Current capacity:60 amperes peak per channel
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Power bandwidth:5 Hz - 100 kHz, +0/-3 dB at 1 watt
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Total harmonic distortion:< 0.2 % at full power
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IM distortion: balanced 16 V rms< 0.04 %
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Slew rate:> 130 V/µsecond
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Dynamic headroom:> 1.5 dB
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Interchannel crosstalk:> 78 dB at 1 kHz;> 63 dB at 20 kHz
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Input sensitivity:1 V for 28.28 V, THX Reference Lev
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Input impedance:47 k Ω unbalanced; 94 k Ω balanced
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S/N ratio:112 dB, input shorted, IHF A-weighted
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Damping factor:> 1100 at 20 Hz
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Voltage:110V - 120V
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Dimensions:17-1/4" w x 7-5/8" h x 20" d, 7" h without feet
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Net weight: 80 lb.