Parasound Halo A52

125wpc Five-Channel Power Amplifier


Powerful amplifier in excellent like new condition, at an awesome price! Original box, packing, and manual are not included.

Circuitry designed by legendary John Curl

 THX Ultra2 certified

 High bias Class A/AB operation

 Balanced inputs with discrete circuits and XLR connectors

 Direct Coupled - no capacitors or inductors in signal path

 Complementary MOSFET driver stage and JFET input stage

 20 beta-matched 15 amp, 60 MHz bipolar output transistors

 1.4 kVA encapsulated toroid power transformer with independent secondary windings for each channel

 100,000 µF power supply filter capacitance

 DC Servo and relay protection circuits

 AC present, channel status, high temperature indicators

 Heavy-duty 24k gold-plated 5-way speaker terminals

 Gold-plated RCA input jacks; ground lift switch

 Auto turn-on by 12v trigger or audio signal, 12v trigger out

 3u Chassis, carry handles, rack mountable with HRA3 (sold separately)

Continuous power output:
        125 watts RMS x 5, 20 Hz - 20 kHz, 8 Ω, all channels driven
        225 watts RMS x 5, 20 Hz - 20 kHz, 4 Ω, all channels driven

        Current capacity: 30 amperes peak per channel

        Power bandwidth:  5 Hz - 100 kHz, +0/-3 dB at 1 watt

        Total harmonic distortion:  < 0.2 % at full power

        IM distortion: balanced 16 V rms  < 0.04 %

        Slew rate: > 130 V/µsecond

        Dynamic headroom: > 1.5 dB

        Interchannel crosstalk: > 78 dB at 1 kHz; > 63 dB at 20 kHz
        Input sensitivity:  1 V for 28.28 V, THX Reference Level

        Input impedance: 47 k Ω unbalanced; 94 k Ω balanced

        S/N ratio: 113 dB, input shorted, IHF A-weighted

        Damping factor:  > 1000 at 20 Hz

        Dimensions: 17-1/4" w x 5-7/8" h x 19-3/4 " d, 5-1/4 " h without feet

        Net weight: 50 lb.

Our Return Policy